# IR obstacle sensor, 3.3-5V

> IR sensor module for obstacle avoidance, compatible with Arduino and other development boards. Operates at 3.3-5V, providing a digital signal on the OUT pin when an object is detected, confirmed by an onboard LED. Detection distance is adjustable via potentiometer between 0-20cm, with a detection angle of 35 degrees. Suitable for robots, automation and proximity projects.

- Page: https://sigmanortec.ro/en/ir-obstacle-sensor-33-5v
- Price: 3.22 RON
- Availability: In stock; 1-2 zile
- Reference: 22015 · EAN: 5942857667454
- Category: Mechatronics and IoT > Sensors and Modules > Proximity and Photoelectric Sensors
- Specifications: Input Voltage: 3.3 - 5 V
- Package (shipping data): 0.003 kg
- Updated: 2026-09-14
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-22 04:32 (Europe/Bucharest)

## Description

The IR obstacle avoidance module, ideal for Arduino and other boards, detects the proximity of objects and provides a digital signal on the OUT pin, confirmed by the LED on the board. It operates at 3.3-5V, has an adjustable distance via potentiometer up to 20 cm and a detection angle of 35 degrees, suitable for robots, automation and proximity projects.
IR sensor (infrared) obstacle avoidance, compatible with Arduino and other development boards.
The sensor emits a digital signal on the OUT pin when it is triggered (close to the object). This is also signaled by the LED present on the board.
To adjust the sensitivity (distance to the obstacle) turn the dedicated potentiometer (caution, it has a limited stroke). The potentiometer is quite imprecise but, once the preferred position is found, the results will be quite consistent. Because of the potentiometer, it is possible that, for detection at greater distances, more time is needed to find its optimal position. We recommend adjusting the LEDs in a parallel position to each other.
Specifications:
Voltage: 3.3-5V
Distance: 0 - 20cm adjustable by potentiometer
Detection angle: 35 degrees