HC-SR04

Ultrasonic Distance Sensor HC-SR04
Voltage：DC5V
Current：less 2mA
TTL：higher 5V
Sensing angle：Less than 15 degree
Sensing distance：2cm-450cm
Accuracy：about 0.3cm
PCB Dimension：4.5*2.0CM
Connection:  VCC, trig(Control),   echo(Receive), Out, GND
Ultrasonic Ranging Module HC-SR04 provides 2cm-300cm non-contact distance sensing capabilities,Ranging accuracy up to 3mm