5x Ultrasonic Module HC-SR04 Distance Measuring Transducer Sensor For Arduino

100% Brand new and high quality.Shape: Same as the picture showModule main technical parameters:1.Working Voltage : 5V(DC)2.Static current: Less than 2mA.3.Output signal: Electric frequency signal, High Level 5V, Low Level 0V.4.Input trigger Signal: 10us TTL impulse5.Echo Signal : output TTL PWL Signal6. Trigger Pulse Input7. Echo Pulse OutputUse method:Supply module with 5V, the output will be 5V while obstacle in range, or ?0V if not.The out pin of this module is used as a switching output when ?anti-theft module, and without the feet when ranging modules.Note : the module should be inserted in the circuit before been power, ?which avoid producing high level of misoperation;if not, then power ?again.Module Working Principle:1.Adopt IO trigger through supplying at least 10us sequence of high ?level signal.2.The module automatically send eight 40khz square wave and ?automatically detect whether receive the returning pulse signal.3.If there is signals returning, through outputting high