KC868-A4S 4G esp32 arduino relay board Released
KC868-A4S esp32 arduino board based on ESP32 wifi chip, many hardware resource for you to use. it support GSM module for SMS, voice call, GPRS communication. Use SMS or call to turn ON/OFF relay will be very easy for home automation DIY. It also have 8 channel dimmer output and PWM output extender. You can…