DFRobot
5V IR Photoelectric Switch (4m)
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 pa...
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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 outputs a signal. It works over distances up to 4 metres with a fast 0.5ms response time.
Powered by 5V DC, this sensor is compatible with Arduino and other microcontrollers for motion detection, speed measurement, timing, and counting applications. Its compact size allows installation in tight spaces.
Key Features
- Sensing Range – Up to 4 metres (thru-beam, non-transparent objects)
- Operating Voltage – DC 5V
- Response Time – 0.5ms
- Wavelength – 830nm (infrared)
- Receiving Angle – ±5°
- Output Current – 30mA
- Output Power – 100mW
- Operating Temperature – −10°C to +60°C
- Storage Temperature – −20°C to +80°C
Wiring
- Transmitter (green PCB) – Red: 5V, Black: GND, Green: floating
- Receiver (black PCB) – Red: 5V, Black: GND, Blue: signal output
Ideal For
- Motion detection and object counting
- Speed measurement and timing gates
- Robot runway conversion and line tracking
- Smart robot competitions
Package Contents
- 1× 5V IR Photoelectric Switch (transmitter + receiver pair)
Jargon buster
Plain-language definitions for the technical terms used above.
- break-beam
- A sensing method where an emitter sends a beam of light to a receiver, and an object is detected when it blocks the beam. It is useful for tripwires, counters, and object detection where you need a clear interrupted/not-interrupted signal.
- DC
- DC means direct current, where electricity flows in one constant direction, as supplied by batteries, USB ports and many plug-pack power supplies. When a product specifies DC, it runs from a DC supply rather than mains AC, so you need to provide the correct voltage and polarity.
- GND
- GND is the ground or reference connection (0 V) for a circuit. When connecting two devices together, their grounds must be joined so both agree on what counts as a low or high signal.
- Motion detection
- The ability to sense that something has moved, either by comparing successive camera frames or by using a dedicated sensor such as a PIR (infrared) or radar module. When a product lists motion detection, movement can be used as a trigger so a system only acts or records when there is activity rather than running continuously.
- PCB
- A printed circuit board (PCB) is a board, usually rigid, with etched copper tracks that connect electronic components together without loose wiring. Components are mounted on the board and signals route between them through the copper layout.
Find this product in
Brands
Supplier page — dfrobot.com
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Related Tutorials
Free guides on learn.littlebird.com.au
