Specification The output port OUT sensor module can be directly connected to the microcontroller IO port , you can directly drive a 5V relay ; the module detects the distance 2 ~ 30cm, detection angle 35 °, the distance can detect potential is adjusted Can be used for 3-5V DC power supply modules When the power is turned on, the red power indicator light Using the comparator LM393 Interface : 1. VCC: External 3.3V-5V voltage (can be directly connected to 5v MCU and 3.3v MCU) 2. GND: GND External 3. OUT: Small board digital output interfaces (0 and 1) Connection : VCC-VCC; GND-GND; OUT-IO With the screw holes of 3mm , easy fixed installation Board Size : 3.1CM * 1.5CM / 1.22 * 0.59"