Easy & power-efficient 2 or 4 relais board for HA with MQTT?

To control various heating/ventilation systems I am looking for a relay board with 2-4 relays.


  • Connect via Ethernet
  • Work with HA and Zigbee2MQTT
  • Switching 230V for small fans, Radiator actuator drive

Nice to have:

  • As power-efficient as possible, this board will run 24/7 and I maybe there are different relais types that do or don‘t permanently User Power but only when switching?
  • Ideally PoE
  • Ideally also WiFi with WPA3
  • Ideally the board is available with 2/4/8/16 relays

So I came across this board, is this a good or bad idea?