the performance of the module is stable, the distance measurement is accurate. High precision, blind is 2 cm.

main technical parameters:

• Working voltage: DC5V
• Quiescent current: less than 2mA
• Level output: high 5V
• Level output: 0V at the end
• Induction angle: not more than 15 degrees
• Distance detection: 2cm-450cm
• High precision: up to 0.3cm wiring, VCC, trig (control), echo (receiver), GND

Instruction： A control port transmit a electrical level above 10US, you can receive high level output. Once get output will timing, when become the Low level you can read the value of the timer, this is the time for distance detection,then can calculate the distance.

The principle of Module works:

• Using IO trigger to distance detection, to at least 10us high electrical level signal;
• Module automatically send 8 40khz square wave, automatically detect whether there is signal return;
• If the signal return, output a high electrical level through IO, the duration time of high electrical level is Ultrasonic from launch to return. distance detection = (high electrical duration time * sound velocity (340M / s)) / 2;