✨ Instant purchase is welcome! ✨ Follow discount and bundle discount available ◎ (See profile for details♪) → #ToyBox's Bargain Products List ✨ Price negotiation OK ◎ Feel free to comment! ✼••┈┈┈┈••✼••┈┈┈┈••✼ Quantity: 3 pieces Voltage: DC5V Quiescent Current: Less than 2mA Level Output: 5V High Output Level: 0V Low Induction Angle: Less than 15 degrees Detection Distance: 2cm to 450cm High Accuracy: More than 2mm Wiring: VCC, trig (control side), echo (receiving side), GND (1) Use IO trigger to supply at least 10us high level signal. (2) The module automatically sends eight 40kHz square waves and automatically detects whether a signal returns. (3) High duration of ultrasonic time from launch to return, high IO output returns signal. Test distance = (time high * sound velocity (340M/S)) 1pcs HC-SR04 sound ultrasonic distance sensor module for Arduino Ultrasonic ranging module HC-SR04 ultrasonic sensor module ✼••┈┈┈┈••✼••┈┈┈┈••✼ ✨ Please be sure to check the actual photos for the condition of the product. ✨ Please understand that the product is stored at home, ECO packaging, and will be shipped at the lowest price. ✨ Please read the profile before the transaction, and Please confirm any unclear points before purchasing. 4-37-20