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ATTACK GLOBAL (HK) Co.,Ltd. is a professional manufacturer specializing in material handling machinery for more than 10 years. We mainly produce and supply forklifts, electric warehouse trucks, aerial working platform and so on. Now, we have created two brands,"ATTACK" and "ASSISTANT". All of our products comply with international quality standards and are greatly appreciated in a variety of markets throughout the world.For many years, the principle of our company is to provide high quality products with competitive prices, fast delivery, flexible designs, prompt responses and good after sale services. The advanced technology, modern design, experienced technical experts, purchasing the main parts internationally assure the products to be high quality with competitive prices, which is also given high evaluation in the same industry.

Articulated Forklift Rough Terrain CPCY-30 Technical Specification：

Eolane SCM supplies:

EL back light membrane switch panel

Flat membrane switch

FPC membrane switch

Graphic overlay

LED membrane switch

Copper circuit on PC and PET materials

Options for membrane switch we usually adopt:

No tactile feeling when pressing.

More than 5 million times’ actuation life.

Can be embedded LEDs, inserted EL or EMI/ESD/RFI Shielding layer.

Metal Dome in switch

Offer good click feeling when pressing

More than 1 million actuation

Poly dome in switch

Has similar click feeling and longer actuation life comparing metal dome.

Cost effective competing metal dome.

There are other options for membrane switch, such as embedded LED, inserted EL back light layer, inserted ESD or EMI/RFI shielding layer and sealed structure (water proof function）

Want to know more about china membrane keypad? Don’t hesitate to contact us.

Beijing Palm International Group Ltd. has over 20 years of experience and are now a professional artificial plant supplier in the artificial trees and planting industry. We provide high quality products, and flexibility to customize artificial tree solutions to customers all at an affordable price. We are able to find the perfect artificial tree solutions according to your space or budget.

At present, artificial trees are more and more popular for its decorating advantage over than those living trees which are not able to survive in some certain environment. That’s why many people love decorating with artificial plants. Sometimes we can not even differentiate artificial trees from living trees without touching.

Characteristics Of Good Quality Artificial Trees

1. Wind-resistant, anti-ultraviolet, anti-mite, anti-corrosion, moisture-proof, mildew-proof, acid and alkali-proof which are all suitable for outdoors.
   2. Fire prevention, non-self-ignition, non-combustion; non-toxic and odor-free,
   3. Divers: artificial tree can be used with color and other special effects.
   4. Durable: No cracks, not easy to deform; washable.
   5. Environmental friendly: all using raw material production, effectively reducing deforestation, protecting nature, and no pollution.

All Kinds Of Artificial Trees

A wide range of large artificial trees for both indoors and outdoors are available here. Preserved washignton palm, preserved date palm, artificial washington palm, artificial date palm, artificial coconut tree, artificial royal coco palm, artificial bayan/ficus tree, artificial maple tree, artificial bamboo, artificial willow tree, artificial pine tree, artificial cypress tree, and artificial leaves and etc,.

Application Occasions Of Artificial Trees

Our products can be used in many occasions, like hotels, parks, commercial streets, plazas, rivers, stations, auditoriums, entertainment venues, ecological gardens, community courtyards, exhibition halls, supermarkets, offices, homes, etc.

Beijing Palm International Group Ltd. is one of the most professional artificial tree manufacturers , we have a lot of decorating artificial plants. Always feel free to inquiry!

Nitrapyrin is an organic compound with the formula ClC5H3NCCl3. It is a widely used nitrification inhibitor in agriculture as well as a soil bactericide and has been in use since 1974. Nitrapyrin was put up for review by the EPA and deemed safe for use in 2005. Since nitrapyrin products is an effective nitrification inhibitor to the bacteria nitrosomonas it has been shown to drastically the reduce NO2 emissions of soil. Nitrapyrin is a white crystalline solid with a sweet odor and is often mixed with anhydrous ammonia for application.

Nitrification is the biological oxidation of ammonia or ammonium to nitrite followed by the oxidation of the nitrite to nitrate. The transformation of ammonia to nitrite is usually the rate limiting step of nitrification. Nitrification is an important step in the nitrogen cycle in soil. Nitrification is an aerobic process performed by small groups of autotrophic bacteria and archaea. This process was discovered by the Russian microbiologist Sergei Winogradsky.

Nitrification is important in agricultural systems, where fertilizer is often applied as ammonia. Conversion of this ammonia to nitrate increases nitrogen leaching because nitrate is more water-soluble than ammonia.

Nitrification also plays an important role in the removal of nitrogen from municipal wastewater. The conventional removal is nitrification, followed by denitrification. The cost of this process resides mainly in aeration (putting oxygen in the reactor) and the addition of an external carbon source (e.g., methanol) for the denitrification.

Nitrification can also exist in drinking water. In distribution systems, chloramines are used as the secondary disinfectant, the presence of free ammonia can act as a substrate for ammonia-oxidizing microorganisms. The associated reactions can lead to the depletion of the disinfectant residual in the system. The addition of chlorite ion into the chloramine-treated water has been shown to control the nitrification. 

Together with ammonification, nitrification forms a mineralization process that refers to the complete decomposition of organic material, with the release of available nitrogen compounds. This replenishes the nitrogen cycle.

Specification of Nitrapyrin

Payment Term

In Jinama, we have three terms used popularly that are
1. 100% T/T in advance
2. 30% T/T in advance, 70% T/T before shipment(or against Bill of Lading)
3. Irrevocable L/C at sight
Other terms are also available in Jinama, please kindly advise our sales.

Delivery Time

1. stock products: about 10 days
   2. Production order: about 40 days to 60 days according to the order list.
   3. Other requirements are negotiable.

Nothing compares to the joy of receiving fresh flowers. Flowers can express many emotions, such as love, sympathy, and blessings. Whether it is love, family or friendship, flowers can be a gift. From birthday flowers to get well flowers or Mother's Day flowers; we have the perfect way to say just what you want to express. Whether it's Valentine's Day flowers of a dozen long stem red roses, celebrating an anniversary with a majestic bouquet of anniversary flowers, or a touching sympathy funeral flower arrangement arrangement, The Flower Box, your trusted florist in Wesley Chapel, can help you make a lasting impression. We can help you express just the sentiment with beautiful flowers gifts.

What we have made about interior flower box

The most popular flower gift boxes we have ever made is cover and base box. Can be square-shaped, round-shaped, oval-shaped or any other different shaped. Most of the clients like to have a ribbon handle to lift up the flower boxes. Some of the clients like to have two eyelets on the sides of the box, in order to lift up the box or let the flowers breathing the air from outside. All the flower boxes are the rigid box made by deep density cardboard to make them strong enough to carry the flowers. We can make the boxes like storage boxes, to put the small box inside the big one. You can have 4 to 5 boxes in one set, to save the room during shipping. It is very important for the big volume box to packed like this.

All the flower boxes can be a display box when you have the cover opened, the flower shows in good view. You can keep it till the time the flowers wither away.
The technics we usually made on the flower boxes are hot stamping and UV coating. The easiest way to high light the logo of the flower shops or the idea of the flower gift.

If you want a triangle flower box or interior flower box or any other kinds of flower box else, just contact us.

Features:

A LLDPE copolymer with butene as comonomer which contains antioxidant.

Good blending with conventional LDPE.

Better sealing,higher puncture resistance. Greater drawdown capability.

Higher tensile strength. Neutralizer: Calcium Stearate.

Antioxidant: Irganox1010, Irganox168

Application:

Food Grade

Heave duty sacks, agricultural films, liners.

Produce bags, stretch film

Supplying Form

Storage

Please store products in a cool, dry location, away from sources of intense heat, incompatible materials, water, heat, and flame.

Long-distance transportation or hot atmosphere may have cracked, that does not affect the quality of products.

We are one of the leading lldpe resin suppliers, RFQ today!

Working Principle of Automatic Screw Feeding Systems

Pour the material into the feeding box and start the switch. The material is continuously lifted from the bottom of the feeding box to the outlet through screw. There is a time setting in the automatic screw feeding systems. Feeding time can be set according to each feeding quantity. Spring feeder adopts screw conveying principle.

The material is rotated from the storage tank to the plastic extruder with a wire spring until the filling signal is sent out by the level device. It stops eating. After a period of time, it can restart the reciprocating cycle. According to the user's requirements, time relay can be used to control the downtime and realize automation.

The automatic screw feeding system is mainly used for the feeding of various plastic powder, granules and powder mixtures, and is used in conjunction with extruders and injection moulding machines. It can also be used to transport flour, talc powder and other powder. The utility model has the advantages of convenient operation, stable performance, large conveying capacity and long service life.

Application of Automatic Screw Feeding Systems

The machine can be used in a wide range of applications, such as powder feeding, plastic granules, powder mixtures, crushers, and powder feeding in pharmaceutical and chemical production processes. It consumes less energy. Compared with traditional vacuum feeder and spring dust feeder, its energy consumption is only about one third of them.

The screw feeder is a necessary auxiliary machine for plastic, food and chemical processing machinery. It can automatically convey powder or granular sheet materials to hopper directly. It is a special equipment for adjusting mixer and so on. Contact materials are made of stainless steel. The raw materials in the process of transportation are completely free from pollution, and no foreign bodies are brought in. It can make the production process completely closed and automated.

Mobile screw feeder is easy to install and movable. If more than one mixer uses the same material, one screw feeder can supply it at the same time, so as to avoid the trouble of manual feeding and make the feeding work safer, more time-saving and more labor-saving.

Application:

The backing of RMC & Riken abrasive cloth AJ23 emery cloth 180 grit is red J wet cloth, Make it as high-quality flexible product and easy to be torn by hand. It is widely used in wood working, metal finishing means decoration and so on. Semi-open planting makes it with the anti-clogging feature, long life, and good grinding efficiency.

Multi-purpose abrasive for use on mild steels, brass, copper, as well as hard and softwoods and so on. RMC & Riken abrasive cloth AJ23 have two applications: one is for hand use, the other is for machine use ( for belts ). Durable grain and flexible backing give an exceptional cost-effective performance. 

The rolling machine, also known as extrusion mill and roller mill, is a new type of cement energy-saving grinding equipment. It has a high-efficiency, low-efficiency ball mill pre-grinding system and reduces steel consumption and noise.

Application of Roller Press in Slag Final Grinding System

Slag Roller machine Flow: Material is dispersed and dried immediately after entering V-type flour separator. The host deals with the slag that has lost its viscosity. Fine slag powder has been dried. It is directly fed into high-efficiency dynamic flour separator by long pipeline, where the slag powder is sorted and finally dried. The heat source of slag drying is provided by coal-fired hot blast stove. The wet slag can be dispersed and dried in V-type separator, long pipeline, and high-efficiency dynamic separator to meet the moisture requirement of drying.

The practice has proved that the slag particle size of roller machine and vertical grinding process is the same, and the slag particle size of ball grinding process is the smallest, that is, the fine particle content of ball grinding slag powder is high (< 30 microns), and the coarse particle content is low. The distribution of slag powder particles in a ball mill is wider than that in a roller machine and vertical mill, and there is little difference between a roller machine and vertical mill.

Roller machine and vertical mill are widely used power-saving equipment in a grinding system in recent ten years. The vertical mill has been widely used in slag final grinding, while roller machine is mostly used in the combined grinding system. The practice has proved that the roller mill used in final grinding of slag can be comparable to vertical grinding, with comparable power-saving effect, lower investment, better market prospects, and popularization value.

Possible Problems in Roller Machine System Operation

It is always the case that the operator controls the stable flow position of the roll press feeding at about 80% of the warehouse weight according to the specifications. When the warehouse is found to have a downward trend, the feeding quantity will be increased immediately, but it is often too late, and the small warehouse will be emptied in tens of seconds. Similarly, when the warehouse is found to have an upward trend, it is too late to stabilize the warehouse by reducing the given pressure and increasing the opening of the inclined insert plate. The small warehouse will burst in a very short time, so the roller machine can only run in an empty warehouse for a long time. The material is directly impacted by the extrusion roll by the feeding belt. The gap and current fluctuate greatly. The vibration of the roller machine is very large, which causes a series of equipment damage and affects the work. Extrusion roll bearings have serious exfoliation of outer ring roller track, unstable feedback pressure of extrusion roll, frequent damage of accumulator bacterial valve assembly, breakage of universal joint, frequent breakage of frame bolts of roller machine, frequent breakage of the torsion support rod and a series of abnormal equipment damage during normal service life. The current of the driving motor fluctuates in a wide range of 22-55A so that the continuous cake cannot be formed, which makes the output of the cement mill extremely unstable.

After a systematic analysis of the process and equipment, the following problems are initially identified:

1) Serious segregation of materials in the weighing bin results in the out-synchronization of the speed of material passing along the axis of the extrusion roll;

2) There is no stable and continuous warehouse pressure in the weighing bin, which can not meet the supersaturated operation conditions of the roller machine;

3) The automatic feed adjusting device self-contained by the roller machine has design defects and cannot adjust the opening of the inclined insertion board to control the feeding amount at any time.

4) The extrusion roll hydraulic correction program has not reached the optimization matching with the actual operating environment.

Don’t hesitate to contact us about grinder machine price!

The benefits of using insoles/inserts can be quickly realized by anybody who stands or walks for long periods of time throughout the day. They can also be beneficial for runners. Not only do they lessen foot fatigue and relieve joint pain in the ankle and knee, but insoles are also known to help with plantar fasciitis and abnormal foot pronation.

Insoles come in a variety of types, each designed with a different application in mind. They will often be advertised with the following terms: arch support, arch cushion, comfort or cushion, athletic or sport, and gel and so on.

Insoles Classified BY Function

Athletic or sports insoles/inserts are often more technical in their design than other insoles. These are insoles engineered for the functions of a specific sport/activity and the needs of an individual involved in that activity. For example, runners typically require good heel & forefoot padding as well as a foot support system to assist with their heel-to-toe (gait) movement. Cyclists require a stiff and compact insole that will work in tight-fitting footwear.

Insoles Classified BY Material

Gel insoles/inserts offer the most shock absorption and provide one of the softest feeling steps. They mold better to the shape of the foot and can bend with the shoe if you step on uneven surfaces. Gel insoles also last longer before losing their shock absorbing abilities than traditional padding.

Soft Memory foam insoles re-bounce in 2 seconds. Best for walking insoles and long-standing insoles.

Insoles Classified BY Group

Orthotic Insoles, Memory Foam Insoles, PU sponge Insoles. Providing Excellent Shock Absorption and Cushioning, Best Insoles for Child, Men and Women for Everyday Use.

Insoles Classified BY Length

Full length insoles/inserts help to increase comfort/reduce heel shock and relieves effectively the burning pains in the ball of foot and heel areas. Improves walking comfort and shoe fit. Comfort insoles are designed for everyday use.

3/4 arch support insoles/inserts are somewhat hard and rigid. This is because they are designed to give support more so than add comfort. They assist the foot in attaining a natural stepping position and help to properly spread the body's weight across the entire foot. Arch supports may feel uncomfortable when one first starts using them, but most become accustomed to them within a week or two.

Insoles Classified BY Activity

Comfort insoles/inserts are designed for Walking, Running, Standing, Hiking, Backpacking, Golf, Cycling, basketball, Football, Soccer, Cleats, Casual, Winter Boot and Military Boot and so on.

If you are looking for shoe insole manufacturers, don’t hesitate to contact us.

Analog weather resistant direct connect telephone are engineered to deliver reliable, high-quality communications in extremely harsh environments, it's an ideal security solution for outdoor or indoor areas.

The shell electrostatic spraying powder coat finishes available in yellow or grey, durable, uvioresistant, and resistant to discolouration also easily cleaned. telephones can be wall mounted or design the mounting bracket according to actual requirements. 

The waterproof analog phone does not need a separate power supply, compatible with 48 ~ 60V of the various PBX, only through the telephone line will be able to transfer 7KM, they are widely used in railways, power stations, the armed services and heavy industry area. 

What kind datas Panama we provided
The country's industry includes, manufacturing of aircraft spare parts, cement, drinks, adhesives, and textiles. Also, some exports for Panama are bananas, shrimp, sugar, coffee, and clothing.

Panama imports list and export data actually provided by government customs, Filter by products, shipment dates, ports, country of origin and more

1200 Million Buyers List Expand More Potential Customers Quickly
Our database has more than 130 million traceable companies, allows you to quickly find buyers and suppliers who export the exact targets you need, also including key decision makers name, email, phone, social media, etc... At the same time, we also send potential customers in the supply chain, such as factories, distributors, engineering companies and shopping malls.

4-Hydroxymethyl-phenylacetamidomethyl resin

PAM resin has become the most widely used resin in Boc chemistry peptide synthesis. It has greater acid stability than Merrifield resin, making it suitable for synthesizing medium and large peptides, such as DNA binding polyamines, human matrix Gla protein(MGP), Kappa-casein. The first carboxylic acid of ion learning exchange is attached to PAM resin using an activating agent such as DCC and DMAP. These conditions can lead to partial epimerization of the amino acids, so HOBt is normally added to reduce racemization.

High light density flip high power cob led, this product USES no gold wire packaging, at the same time has the advantages of high central light intensity, uniform light output, high reliability, the size of the product is compatible with the commercial bracket and lens on the market and other related kits. It overcomes the disadvantage that the voltage of the formal chip increases sharply with the increase of the input current and is prone to burn out. At the same time, it can provide more uniform light output effect and higher optical density per unit area. At the same time, the product USES high thermal conductivity and high insulation substrate material, full heat dissipation capacity is more excellent.

COB (Chips on Board), is a new technology of LED packaging for LED light engine. Multi LED chips are packaged together as one lighting module.  COB LEDs are basically multiple LED chips (typically nine or more) bonded directly to a substrate by the manufacturer to form a single module. Since the individual LEDs used in a COB are chips and not traditionally packaged, the chips can be mounted such that they take up less space and the highest potential of the LED chips can be obtained. When the COB LED package is energized, it appears more like a lighting panel than multiple individual lights as would be the case when using several SMD LEDs mounted closely together.

The multi head CNC router support spindle integrated control for multi-head from 2 to 8pcs, can delivery command to spindles to work in tandem, also can work similarly as blue elephant 1530 cnc router with an auto tool changer. When the first spindle complete its work, the second spindle can go on its own work automatically. This kind of multi head multi router woodworking can be determined based on machined material, and 3d engraving can also be achieved by equipping ordinary engraving machine with rotating axis. Multi head CNC router comes with various specifications to fit different customers’demands. And mainly used for mass production, such as embossing, art and wood-assembled toys, furniture art inlays and decorations, etc.

Blue Elephant multi spindle router can not only realize the processing requirements of multiple spindles working at the same time, but also meet the requirements of successive spindle work. A variety of options to meet any of your processing needs.

The Ontario Regiment (RCAC) is a Primary Reserve armoured reconnaissance regiment of the Canadian Army.

Specifications of the Ontario Regiment Cap Badge :

Material: Bronze

Design: 3D, Cut Outs

Plating: Antique Bronze Plating

No Color Filled

Attachment: Clip

Donghong Craft is specialized making high quality pins and badges with 35 years experience. Welcome to contact us for more information or get quotation for your custom designs military badges / Army Badges!

Overview

The Wi-Fi inverter data logger (WE3162/WU3162) has an embedded Wi-Fi module, which can connect and transmit the data to remote monitoring portal via Wi-Fi. It can collect all the accurately real-time data, including status, performance and alarms from wifi solar inverter by standard communication interface (RS485/422/232) and report to remote cloud every 5 minutes.

This data logger can connect to the internet via Wi-Fi networks by simple configuration and operation and allows the operating data to be visualized and monitored regardless of location using the web portal. Users can directly get access to its internal web server and set Wi-Fi settings by few steps.

We provide two different models of the Wi-Fi inverter data logger. Embedded Wi-Fi inverter data logger (WE3162) is a monitoring module that can be easily embedded in inverters, without any additional external hardware. USB type inverter data logger (WU3162) is a monitoring module which can be easily plug into the inverter.

We provide fully customization service for this product. Firstly, we customize the hardware, including power supply, communication interface and other necessary parts for easy integration with your solar inverter; Secondly, we customize the embedded firmware according to the communication protocol of your solar inverter, so it can communicate smoothly with your solar inverter. At last, if needed we can customize the web-based monitoring system and android/IOS app.

Key Feature

Satisfied for industrial application and able to work under high temperature

One-key setup to connect to your home Wi-Fi network

Web based configuration interface for easier settings

Collect the inverter data and report to the cloud every 5 minutes

The communication protocol with the inverter can be customized

Easily to embed or plug into the inverter

TTL or RS485 communication interface are optional

Hardware Appearance

We provide the customized hardware. The below pictures are for your reference.

View the data on the web portal

We can provide the customized web monitoring system. The below pictures are the examples of the system we developed previously.

View the data on mobile app

We can provide the customized android/IOS app. The below pictures are the examples of the app we developed previously.

The 5 Main Areas of DIY Drone Parts

Once you’ve decided on the type of DIY drone you want to build (e.g. quadcopter, hexacopter, etc.), you’ll have to learn about the 5 areas of DIY drone construction, which are:

Mechanics, Propulsion, Flight Controllers, Sensors, Video

Diy Quadcopter Kit: Mechanics
First, you'll want to familiarize yourself with the types of drones that you can build. Carbon fiber frames, this material may be a more cost-effective option for your first drone especially in the event that you don’t quite master construction the first time around and/or accidentally crash it.

DIY Quadcopter Kit: Propulsion
Propulsion is what drives your drone or UAV. One of the most important features to consider for this area, are the propeller blades. Drone builders have the option of selecting fixed or folding blades; folding blades can make storage easier, especially if you’re short on space.
Another important component is the ESC or “Electronic Speed Controller.” This device controls the speed at which your UAV motor rotates and connects the battery, motor, and flight controller.

Next, you'll want to consider a power source. A Lithium Polymer battery is the most common battery used for DIY drones, but there are a lot of other options. You'll also need a Power Distribution board or cable to split the power to the devices connected to your UAV.

DIY Drone: Flight Controllers
There are many components that can be integrated into DIY drone controls. The most important are: a base station, a transmitter, and a flight controller. A control station can be used instead of or with a handheld transmitter. A transmitter is a device that sends some signal or multiple signals to your receiver. Generally, a base station will include a transmitter, antennae, a video receiver, a monitor, battery, and other devices.

The flight controller is the “main brain” of your UAV. Like a computer, it processes all the incoming/outgoing data and signals. Depending on how sophisticated your flight controller is, it may have GPS, a barometer, compass, and more.

DIY Drone: Sensors
Depending on your budget and your experience constructing DIY drones, there are a wide variety of sensors you can incorporate into your custom aircraft such as a(an):

Accelerometer: a device that lets you know about your DIY drone's orientation with respect to the ground.
Barometer: a device that measures pressure and provides important information about the altitude you're flying in.
Compass: a device that provides you with North, South, East, West information.
GPS: a positioning system that uses satellites to pick up your drone's location.
Altimeter: a device that gives you information about your drone's altitude. Since federal regulations prohibit drones flying above 400′, an altimeter may be a useful tool to help you avoid legal penalties.

DIY Drones: Video
If you’re not interested in aerial photography or cinematography, you don’t have to add a video component to your DIY drone. Some people are more interested in flying; for these people, not including video will help reduce the cost of building their first DIY drones.

However, for the people who want to take photos and capture aerial scenes, they have several video options available.

FPV or “First Person View” is a video option where a camera is mounted to a drone and a pilot can see a live video feed displayed on a monitor, smartphone, or virtual reality glasses.

Another option is incorporating a gimbal camera, which many people use to take stills and video of themselves in motion. 

Depending on your experience and skill set, you may be able to experiment and successfully implement different photography and video devices. Using a little craft and ingenuity, you can integrate a wide variety of digital video cameras, LCDs, or OCDs to your do-it-yourself drone. Are you looking for custom drone parts china? RFQ today!

Overview of mini pir motion sensor

Senba Pyroelectric Infrared Sensors with high sensitivity, low noise and reliable performance. We have our own research and development department, with international technology and Hybrid IC technique expertise developed more than 15 years. The goods come standard with enhanced immunity to RFI (Radio Frequency Interference) and 2.4G high frequency interference. Senba PIR sensor suppport delay time, sensitivity adjustable, lighting adjustable.

Features of miniature pir sensor

High sensitivity and excellent S/N ratio

Enhanced immunity to RFI (Radio Frequency Interference)

Slight movement can be detectable

High immunity to external noise (vibration, etc.)

Applications of micro pir sensor

Wireless Devices/Mobile Equipment

Wireless occupancy sensors (powered by PV cells or battery)

PC and smart phones

Commercial & residential lighting fixtures

Video intercoms

Vending machines

FAQ

1.Can PIR sensor detect cars?

PIR-based Motion Detection: In this case motion is detected by means of a PIR sensor, a passive infrared sensor. This sensor detects emitted infrared energy from objects (humans and animals, but also cars) in the form of heat.

2.Do PIR sensors work in the dark?

Yes, motion sensors work in the dark. The way that a motion sensor detects movement has nothing to do with how light or dark it is in the immediate area. ... Since infrared energy is present and can be detected regardless of the amount of light in the environment, a PIR motion sensor will work just fine in the dark.