SEN0304 Ultrasonic Sensor Module DFRobot SEN0304 Ultrasonic Sensor Module comes with an open dual probe. This module is compatible with 3.3V or 5V logical-level controllers like Arduino and Raspberry Pi. The DFRobot SEN0304 ultrasonic sensor module, offers a resolution of 1cm and an accuracy of ±1%. This module also has built-in temperature compensation that provides effective ranging from 2cm to 500cm. The SEN0304 sensor module adopts I2C communication and standard interface of gravity PH2.0-4P vertical patch socket.