Ultra sonic sensor
Ultrasonic ranging module HC - SR04 provides 2cm - 400cm non-contact measurement function, the ranging accuracy can reach to 3mm. The modules includes ultrasonic transmitters, receiver and control circuit.
High sensitivity ultrasonic range sensor
Works with Arduino board
Working Voltage - DC 5V, Working Current - 15mA
Max Range - 4m, Min Range - 2cm, Measuring Angle - 15 degree
colour: silver and weight: 41 gms