Maxcio Rotary Dimmer (EDM-1WAA-EU)
Maxcio Rotary

Available from:


Install method:
Replace module

GPIO #Component
GPIO00 User
GPIO01 User
GPIO02 User
GPIO03 User
GPIO04 User
GPIO05 User
GPIO09 None
GPIO10 None
GPIO12 User
GPIO13 User
GPIO14 User
GPIO15 User
GPIO16 User
GPIO17 None
This device uses WB3S module which needs to be replaced with ESP8685-WROOM-01, ESP-12, ESP-C3-12F, ESP-12H, ESPC2-12 or ESP8684-WROOM-01C. Read more about module replacement in a detailed guide.

Once the template is applied, run the following commands to configure communication with the MCU: console Backlog SetOption97 1; TuyaMCU 11,1; TuyaMCU 21,2; DimmerRange 10,1000 3 The ESP talks to a secondary MCU at a different baud rate so that is why SetOption97 is required.

The Minimum dimmer range for the physical knob can be set with TuyaSend2 3,10

Tuya-Convert 2.3 was not possible for this device because the manufacturer started using newest Tuya firmware (tested on 2021-03-02).

The switch hardware version was updated (1.4) and is now shipped with the WB3S board, which makes the dimmer incompatible with tasmota and requires swapping the WB3S board with an ESP-12 board.

hardware rev 1.4

When replacing the WB3S with an ESP-12, make sure to connect GND and GPIO15 together.

replaced with ESP GPIO15 connected to GND