Description

1 VCC external 3.3V-5V voltage (can be directly connected with the 5V MCU and 3.3V chip)

2 GND external GND

3 IN external microcontroller I/O port, I/O port has been designed with 10K pull-up resistor

Theoretical test suite from 5-8 meters, but the surrounding environmental factors depends on when you use the actual application and intermediate barrier (e.g. diaphragm, glass, hinder the barrier or other materials), receiving head using HX1838, with a power indicator light, can receive the 38K frequency of any remote control coding data!

1, sensor using HX1838, high sensitivity

2, working voltage 5V

3, output: digital output