10Pcs Geekcreit Ultrasonic Module HC-SR04 Distance Measuring Ranging Transducer Sensor DC5V 2-450cm

Description:
Working Voltage : 5V(DC)Static Current: Less than 2mA.Output Signal: Electric frequency signal, high level 5V, low level 0V.Sensor Angle: Not more than 15 degrees.Detection Distance: 2cm-450cm.High Precision: Up to 0.3cmInput Trigger Signal: 10us TTL impulseEch0 Signal : output TTL PWL signal

Mode of connection:VCCtrig(T)ech0(R)GND
Use 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