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ESP32 TYPE-C 30P cp2102
ESP8266 Serial WIFI Witty Cloud Development Board ESP-12F Module MINI nodemcu
Timer Relay Delay Switch 7Seg Multifunction Trigger Module HCW-M421
Relay Module 8-Channels
USB or USB Type C to DB9 Pin RS232 cable (0.5m) Male
Songle Relay 12V 20A -5PIN 

















