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HC-SR04 Ultrasonic Sensor Module Ultrasonic Distance Sensor

Description:

HC-SR04 ultrasonic module can offer non-contact distance sensing function.

Includes ultrasonic transmitter, receiver and control circuit.

Operation requirement:

Take IO port TRIG to trigger ranging.

It needs 10 us high level signal at least.

Operating principle:

1.It can send 8 pro 40 kz square wave automatically, and will test if there is any signal returned.

2. If there is signal returned, output one high level signal via IO port ECHO.

3.The duration of the high level signal is the time from transmitter to receiving with the ultrasonic.

Specification:
Operating Voltage	:	5V
logic voltage	:	3.3V or 5V
Static current	:	Less than 2mA
Sensor angle	:	Less than 15 degrees
Detection distance	:	2cm-450cm
High precision	:	Up to 3MM
Echo signal	:	Output TTL PWL signal
Operating frequency	:	40Hz
Material	:	PCB
Color	:	Blue + Black
Size	:	45*20*15 mm
Weight	:	10g
Compatible With	:	Intelligent Bluetooth Tracking/ Obstacle Avoidance Car
Collocation At Optional	:	Ultrasonic Sensor Module HC-SR04 Bracket Holder