# LM393 IR speed sensor

> LM393 IR speed sensor used for measuring rotation speed and counting optical (infrared) pulses. Provides a digital output signal (0 and 1), operates at 3.3V ~ 5V, and includes an LED indicator for output status. Dimensions: 32 x 14 x 7 mm. Compatible with Arduino and other development boards.

- Page: https://sigmanortec.ro/en/lm393-ir-speed-sensor
- Price: 8.11 RON
- Availability: In stock; 1-2 zile
- Reference: 22019 · EAN: 5945092930901
- Category: Mechatronics and IoT > Sensors and Modules > Light and Optical Sensors
- Package (shipping data): 0.004 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 03:39 (Europe/Bucharest)

## Description

Ideal for measuring rotation speed and counting pulses in Arduino projects, this IR optical sensor with LM393 comparator provides stable digital 0 and 1 signals, operates at 3.3V to 5V for easy integration, has LED indicator for output status and a compact 32 x 14 x 7 mm format suitable for mounting in tight spaces.
Speed sensor, counting optical pulses (infrared), with LM393 comparator, compatible with Arduino and other development boards.
Specifications:
Working voltage: 3.3V ~ 5V
Output format: digital (0 and 1)
Output status indicator
Dimensions: 32 x 14 x 7 mm