# Infrared speed sensor A22

> Infrared speed sensor A22 (ref. 9079), photoelectric, compatible with Arduino and other development boards. Consists of an IR emitter and receiver that switches when the beam is interrupted, providing a digital output via LM393 comparator and H2010 optocoupler. Operates at 5V, has a 10mm slot between the arms and dimensions of 20 x 28 x 17mm. Signal on beam interruption: High.

- Page: https://sigmanortec.ro/en/infrared-speed-sensor-a22
- Price: 4.26 RON
- Availability: In stock; 1-2 zile
- Reference: 9079 · EAN: 5947524056630
- Category: Mechatronics and IoT > Sensors and Modules > Light and Optical Sensors
- Package (shipping data): 0.003 kg
- Updated: 2026-09-23
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-22 01:42 (Europe/Bucharest)

## Description

Infrared photoelectric sensor for measuring speed and rotation or counting objects, compatible with Arduino and other boards. Includes IR emitter and receiver that switches when the beam is interrupted, offers stable digital output via LM393 comparator and H2010 optocoupler, operates at 5V, has a 10 mm gap between arms and compact dimensions 20 x 28 x 17 mm.
Photoelectric speed and rotation sensor compatible with Arduino and other development boards, used to measure speed, rotations or to count objects that pass between the transmitter and the receiver.
It is composed of an IR emitter and a receiver that activates whenever the infrared ray is interrupted.
The sensor integrates an LM393 comparator that provides a digital output and an H2010 optocoupler.
Specifications:
Supply voltage: 5V
Output: Digital
Distance between arms: 10mm
Beam interruption signal: High
Dimensions mm: 20 x 28 x 17mm