This product is simple to use, and a Control Port high above a 10US, you can wait for the high output at the receiving port. An output can open the timer can be read when this port goes low timer value for the time ranging be calculated distance. The performance of this module is stable and precise measure of distance. And comparable SRF05, SRF02 Ultrasonic Ranging Module. Module precision, blind spots (2cm) super close, stable distance measurement.Specifications:Material: Aluminum #43;copperColor: BlueWorking voltage: DC5VQuiescent current: #xff1c;2mALevel output: High 5VLevel output: Bottom 0VSensing angle: not more than 15 degreesDetection range: 2cm-450cmHigh precision: up to 0.3cmTest distance #61; (time high * speed of sound (340M / S)) / 2PCB board size: 4.5*2.0cmConnection mode: VCC, trig (control end), echo (receiver end), GNDPackage size: 16*8.5*2cm/6.29*3.34*0.78inPackage weight: 10gNote:Item color may show sight aberration due to different shooting light and monitor display.Packing list:1* Ultrasonic Wave Detector Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.