HC-SR04 Ultrasonic Range Sensor

This economical sensor provides 2cm to 400cm of non-contact measurement functionality with a ranging accuracy that can reach up to 3mm. Each HC-SR04 module includes an ultrasonic transmitter, a receiver and a control circuit. 

Features of the HC-SR04:

• 5V Operating Voltage

• 15mA Peak Current Consumption

• 40Hz Sample Rate

• Valid Detection Range: 2cm - 4m

• 40 kHz Ultrasonic Pulse

• Compatible with Arduino, Raspberry Pi