KC868-A2 esp32 4G/2G arduino relay board Released
KC868-A2 esp32 4G relay board based on ESP32 wifi chip, many hardware resource for you to use. it support GSM module for SMS, voice call, GPRS communication. Support 4G SIM7600 module or 2G SIM800L module. Use SMS or call to turn ON/OFF relay will be very easy for home automation DIY. You can write any…