Shawader 2Ch Touch Light Switch (WLS028 2)
Shawader 2Ch Touch Light

Available from:


Install method:
USB to Serial

GPIO #Component
GPIO00 None
GPIO01 None
GPIO02 None
GPIO03 None
GPIO04 Relay 1
GPIO05 None
GPIO09 None
GPIO10 None
GPIO12 Button 2
GPIO13 Relay 2
GPIO14 Button 1
GPIO15 None
GPIO16 Led 1
GPIO17 None
Configuration (old format, will be converted to new template when applied)


Installation was done over serial as Tuya version was to new for Tuya Convert to work.

  1. Open the device and locate the 6 pads on the back of the button PCB (not the relay PCB).
  2. The pinout for the 6 pads is as follows (starting from left if pads is in upper right corner):
    1. 3.3V
    2. RXD
    3. TXD
    4. GPIO0 (Boot mode pin)
    5. RES12K
    6. GND

Solder cables to the pins and then do as follows:

  1. Connect GND.
  2. Connect RXD to TX on USB to Serial converter.
  3. Connect TXD to RX on USB to Serial converter.
  4. Connect GPIO0 to GND.
  5. Connect RES12K to GND.
  6. Connect 3.3V.
  7. Disconnect RES12K from GND.
  8. (Optional) make backup of original firmware.
  9. Flash tasmota using the USB to Serial converter.


Enable the template and execute the following command:

Backlog ButtonTopic1; ButtonTopic2; SetOption13 1;

Pinout PCB