Motion (PIR, ultrasonic)

SKU: DF-SEN0171 | Brand: DFRobot

A passive infrared (PIR) motion sensor from DFRobot's Gravity series. It detects infrared radiation from people and animals in motion and outputs a digital HIGH signal when movement is detected — ideal for security sy...

SKU: DF-SEN0311 | Brand: DFRobot

A commercial-grade waterproof ultrasonic distance sensor with UART serial output. The A02YYUW features a much smaller blind zone (3 cm) and wider sensing angle than many comparable sensors, plus penetration through sm...

SKU: DF-SEN0523 | Brand: DFRobot

This IR break-beam photoelectric switch detects objects by sending an invisible infrared beam from an emitter to a receiver. When a non-transparent object passes between the two and breaks the beam, the receiver outpu...

SKU: DF-SEN0312 | Brand: DFRobot

The ME007YS is a waterproof ultrasonic distance sensor designed for non-contact liquid level measurement and other distance sensing applications. With an IP67-rated sealed probe and UART serial output, it delivers rel...

SKU: AF-3942 | Brand: Adafruit

The HC-SR04 is an ultrasonic distance sensor that measures distances from approximately 2 cm to 400 cm (best results between 10–250 cm). Widely used in robotics, automation, interactive art, and motion sensing project...

SKU: DF-SEN0208 | Brand: DFRobot

Most ultrasonic distance sensors aren't waterproof which can be a problem if you need your project to withstand the elements outdoors. No need to worry any more! We have developed waterproof ultrasonic distance senso...

SKU: LB-LS1274 | Brand: Little Bird

Light up your night with this Battery Powered PIR Motion Sensor with 9 LED illumination.This LED light is perfect for providing light in dark areas around your home. The PIR motion sensor allows the light to turn o...

SKU: DF-SEN0522 | Brand: DFRobot

This human body sensing switch adopts an infrared detection way to control load switch. It offers a detection range of 5~8m, high sensitivity, and reliability. The sensor has an adjustable delay function and the ...

SKU: DF-SEN0313 | Brand: DFRobot

A waterproof ultrasonic distance sensor with UART serial output. The A01NYUB measures distance by timing the ultrasonic pulse echo and outputs the result directly via asynchronous serial at 9600 bps — no external sign...

SKU: LB-LS6569 | Brand: Little Bird

A DIY soldering kit that builds into a functional ultrasonic distance meter. Using an HC-SR04 ultrasonic sensor, STC89C52 microcontroller, and 3-digit 7-segment display, this kit measures distances from 5cm to 4m with...

SKU: DF-SEN0388 | Brand: DFRobot

This is a non-contact ultrasonic ranging sensor of high-performance from URM09 series, employing standard PH2.0-3P Gravity vertical interface. It provides an accuracy of 1% within an effective measuring range of 2~500...

SKU: EF-EF03085 | Brand: ElecFreaks

The HC-SR04 is a widely used ultrasonic distance sensor that provides non-contact measurement from 2 cm to 450 cm with up to 3 mm resolution. It uses a 40 kHz ultrasonic transducer pair — one transmitter and one recei...

SKU: DF-SEN0301 | Brand: DFRobot

This is an ultrasonic distance sensor(ULS) of high performance with an enclosed waterproof probe. The sensor, like many other ultrasonic sensors, based on the principle of ultrasonic echo ranging, determines the dista...

SKU: DF-SEN0304 | Brand: DFRobot

DFRobot URM09 is an ultrasonic sensor specifically designed for fast ranging and obstacle avoidance application. Its measuring frequency can reach up to 50Hz. The sensor adopts built-in temperature compensation and I2...

SKU: DF-SEN0018 | Brand: DFRobot

This is a simple to use arduino motion sensor. Power it up and wait 1-2 seconds for the sensor to get a snapshot of the still room. If anything moves after that period, the 'alarm' pin will go low. This sensor c...

SKU: DF-SEN0591 | Brand: DFRobot

##Introduction With a measurement range of up to 3m, the RS485 ultrasonic obstacle avoidance distance ranging sensor offers advantages such as small blind zones (Measurement accuracy: 1 + (S * 0.3%) cm), narrow measur...

SKU: DF-SEN0598 | Brand: DFRobot

An IP68-rated ultrasonic obstacle avoidance sensor specifically designed for underwater applications. With a measurement range of 2–300cm and UART output, this compact sensor enables underwater vehicles and robots to ...

SKU: DF-SEN0592 | Brand: DFRobot

The ultrasonic distance range sensor uses ultrasonic technology to detect obstacles up to 5 meters away in robot automation control applications. It offers advantages such as small blind zones (Measurement accura...

SKU: DF-SEN0519 | Brand: DFRobot

The DFRobot URM15 is an industrial-grade ultrasonic ranging sensor with an IP65-rated waterproof probe. It provides an effective measuring range of 30–500 cm (tested against a flat wall) and communicates via an RS485 ...

SKU: DF-SEN0352 | Brand: DFRobot

The DFRobot URM13 is a compact ultrasonic ranging sensor with an open single-probe design. It supports three communication methods — TRIG pulse (SR04-compatible), UART, and I2C — making it versatile for a wide range o...