5V HC-SR04 Ultrasonic Sensor 4pin

The HC-SR04 ultrasonic sensor can send eight 40 kHz and detect whether there is any pulse signal back.If it back, a high level signal will be outputted by IO, and the duration of the signal is the time from sending ultrasonic to returning HC-SR04 Test Distance : high level time velocity of sound (340M/S) /2 HC-SR04 Power Supply : 5V DC; Quiescent Current : <2mA,; Effectual Angle: <15° ; Detection Distance : 2cm~500 cm; Resolution : 0.3 cm Equipped with anti-reverse pin socket – making the wiring much tighter and convenient; 4-pin anti-reverse cable also included. Uses the MCU STC15W104 which has a built-in clock, no need of external crystal oscillator. Power Supply :5V DC Quiescent Current : <2mA Effectual Angle: <15° Ranging Distance : 2cm - 500 cm Resolution : 0.3 cm Mode of Connection: VCC/ trig(T)/ Echo(R)/ GND(VCC supply 5V, and GND is ground wire. TRIG is trigger control signal input, ECHO is echo signal output.) Attention: The module should be inserted in the circu