HiLetgo 5pcs HC-SR04 Ultrasonic Module Distance Sensor

Item Condition: New – Brand: HiLetgoModel: 3-01-0008-AColor: Blue – Product Information The HC-SR04 ultrasonic sensor can send eight 40 k – Hz and detect whether there is any pulse signal back. – If it back, a high level signal will be outputed 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 : <2m - A,; 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.