Keyestudio RJ11 EASY plug Infrared Obstacle Avoidance Sensor Module for Arduino Starter STEAM

The Keyestudio RJ11 EASY plug Infrared Obstacle Avoidance Sensor Module is a highly precise detection sensor designed for wheeled robots and smart car projects. It is perfect for students, educators, and makers looking to easily add obstacle detection or line tracking to their Arduino-based STEAM builds.

Reliable obstacle detection

This module uses an infrared transmitting and receiving pair to detect objects in a robot's path. When the emitted light reflects off an obstacle, the onboard comparator circuit processes the signal and illuminates the indicator LED.

Adjustable detection range

You can easily calibrate the sensor's sensitivity by rotating the onboard potentiometer knob. This allows you to set the effective detection distance anywhere from 2cm to 40cm to suit your project's environment.

Versatile tracking applications

Beyond simple collision avoidance, this high-precision sensor is ideal for line counting and black-and-white line tracking. Its strong adaptability to ambient light ensures reliable performance in varied lighting conditions.

Easy plug connection

Designed for rapid prototyping, this module features an RJ11 EASY plug interface. It must be used together with an EASY plug control board, eliminating messy wiring and soldering.

Compact and lightweight design

Measuring just 52mm by 17mm by 18mm and weighing only 6.2g, this sensor adds minimal bulk to your mobile robot. Its compact footprint makes it easy to mount on small chassis designs.

Technical specifications

The sensor operates on a DC 3.3V to 5V power supply with a working current of 20mA or more. It outputs a TTL voltage signal, features a 35-degree effective detection angle, and operates reliably in temperatures from -10 to +50 degrees Celsius.