Using IO trigger for at least 10us high level signal
The Module automatically sends eight 40 kHz and detect whether there is a pulse signal back
IF the signal back, through high level ,time of high output IO duration is the time from sending ultrasonic to returning. Test distance = (high level time¡Avelocity of sound (340M/S) /2
Power supply:5V DC, quiescent current: <2mA, effectualangle: <15¡aranging distance: 2cm~500cm, resolution: 0.3 cm

Technical Details

Size (LWH): 5.1 inches, 2.2 inches, 0.6 inches
Product Details
Product Dimensions: 5.1 x 2.2 x 0.6 inches
Shipping Weight: 0.02 pounds (View shipping rates and policies)
ASIN : B00M2MQLFM