A22 Ultrasonic Distance Sensor for AGV Car & Robot Obstacle Avoidance — Water Level Detection, UART/PWM/RS485/IIC, 2cm to 300cm, 3V to 12V, Easy to Operate

Compact and easy-to-use, the A22 ultrasonic distance sensor provides reliable range sensing from 2cm to 300cm. It is well suited for water level monitoring as well as obstacle avoidance on AGV, car, and robot platforms. The module offers flexible interfacing with multiple output options: UART, PWM, RS485, and IIC, making it compatible with a wide variety of controllers. Designed to run on 3V to 12V power supplies, the A22 adapts to different system voltages without extra hardware. Built-in temperature compensation keeps readings stable and accurate across changing ambient temperatures, ensuring dependable performance in real-world conditions.