EARU DIN Circuit Breaker 2P 63/80A eWeLink White DIN Relay (RDCBC-2P)
EARU DIN Circuit Breaker 2P 63/80A eWeLink White

Available from:

Install method:
USB to Serial

GPIO #Component
GPIO00 Button 1
GPIO01 None
GPIO02 None
GPIO03 None
GPIO04 None
GPIO05 None
GPIO09 None
GPIO10 None
GPIO12 Led 1
GPIO13 Relay 1
GPIO14 None
GPIO15 None
GPIO16 None
GPIO17 None

This device, on version eWeLink (november 2023), have PSF-B01 no Tuya MCU. PSF-B01 is a single-channel ultra-low-power Wi-Fi switch module based on ESP8285. It can flash with Tasmota USB serial TTL. ((https://templates.blakadder.com/PSF-B.html))


  • 2P version is in fact 1P+N (the relay cuts the live only)
  • The enclosure of 2P and 4P versions is secured with only two screws and can be dismantled without damage (unlike narrower 1P versions that are riveted and must be destroyed)
  • No need to make a connection between the GND and GPIO pins of the PSF-B01 chip when flashing, as the button is already connected to these pins and can be pressed when powered up