Shelly i3 Action and Scenes Activation Device Switch Module
Shelly i3 Action and Scenes Activation Device

Available from:


Install method:
MgOS to Tasmota

GPIO #Component
GPIO00 None
GPIO01 None
GPIO02 None
GPIO03 None
GPIO04 None
GPIO05 Led1i
GPIO09 None
GPIO10 None
GPIO12 Switch2n
GPIO13 Switch3n
GPIO14 Switch1n
GPIO15 None
GPIO16 None
FLAG Temperature
Template (old version)
{"NAME":"Shelly i3","GPIO":[0,0,0,0,0,56,0,0,83,84,82,0,0],"FLAG":2,"BASE":18}

Internal RST button is located on GPIO4 but not entered in the template until tested.


After flashing Tasmota, the Shelly i3 will publish all events of each of the three inputs via “stat/%topic%/POWER” (ON/OFF). But there is no separate POWER1, POWER2 and POWER3. That means that you can only distinguish the state of each switch via the SENSOR data, that is only published every few minutes, but not instantly.

To avoid that issue, the individual switches can publish their own mqtt messages when something changes via Rules in Tasmota.

Commands to be entered via the Tasmota console on your Shelly i3

Backlog Rule1 on Switch1#state do Publish stat/%topic%/SWITCH1 %value% endon on Switch2#state do Publish stat/%topic%/SWITCH2 %value% endon on Switch3#state do Publish stat/%topic%/SWITCH3 %value% endon; Rule1 1; SwitchMode1 1; SwitchMode2 1; SwitchMode3 1; SwitchTopic 0

More about switches and rules