鉅發企業 ( 香港 ) 有限公司

The HC-SR04 Ultrasonic Sensor is an proximity/distance sensor that can be used

for object avoidance in various applications from robotics to car parking. This

module has integral ultrasonic transmitters, receiver and control circuit and can

be used alone or in conjunction with Arduino MCU.

Working Voltage: DC 5V
Output : 5V
Standby Current: 2ma
Detection Distance : 20 ∼ 4500mm
Resolution: >2mm
Dimensions : 45 x 27 x 17mm
Weight : 9g

Board Connections:

Vcc +5V supply

Trig   Trigger puse input

Echo  Output of return pulse

Gnd   Supply negative