3 Way DIY Smart Dimming

3-Way Dimming without the cloud! I show the hallway 3 way light that was in dire need of dimming at night from our motion activated lights.  All of the Tasmota rules and links to wiring diagrams are included below. Enjoy! Subscribe, give us a thumbs up, and feel free to comment if you have any questions.

Acenx Dimmer Switch

Zemismart Switch

3-Way Switch Diagrams

How to Flash the Acenx/Martin Jerry Dimmer

Amazon US Link

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Primary Dimmer Rules
Rule1 on Switch2#state=2 do Dimmer - endon on Switch3#state=2 do Dimmer + endon on Switch2#state=3 do Dimmer 30 endon on Switch3#state=3 do Dimmer 100 endon
Rule2 on Power1#State=1 do backlog publish cmnd/SW_Hall_Secondary/ledpower 1; ledpower 0 endon on Power1#State=0 do backlog publish cmnd/SW_Hall_Secondary/ledpower 0; ledpower 1 endon
Rule3 on Dimmer#State>=70 do Var1 15 endon on Dimmer#State<70 do Var1 85 endon on System#Boot do Var1 15 endon on Event#TogDim do Dimmer %var1% endon

Secondary Switch Rules
Rule1 on Switch1#State=2 do publish cmnd/SW_Hall_Primary/Power TOGGLE endon
Rule2 on Switch1#State=3 do publish cmnd/SW_Hall_Primary/Event TogDim endon


  1. Hy, i have already bought some of the MJ 3 way dimmer. Is there a way to controll them locally with Home assistant?

    1. I just got help from the masters on Discord in Digiblur's server - trick is to realize the 3way dimmer is a TuyaMCU device and requires different setups from the other MJ swiches. Here's a snip of that chat that helps a lot:

      Load the full Tasmota stock bin on it. Go to configuration, configure module, pick Module 54 (Tuya MCU) You will need to enable 115200 baud rate via setoption97 1 on the console.


  2. It is hard to find a 3-way dimmer. Most of the links are broken to purchase them or they are not 3-way...


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