Arlec 4 Outlet Power Strip
Model reference: PB4KSHA
Arlec 4 Outlet

Available from:

Flashed with:
Serial port

GPIO #Component
GPIO00 None
GPIO01 Button1
GPIO02 User
GPIO03 User
GPIO04 User
GPIO05 None
GPIO09 None
GPIO10 None
GPIO12 None
GPIO13 Led1i
GPIO14 Relay1
GPIO15 None
GPIO16 None
ADC0 None
Template for Tasmota v9.1+
{"NAME":"Arlec PB4KSHA Powerboard","GPIO":[0,32,1,1,1,0,0,0,0,320,224,0,0,0],"FLAG":0,"BASE":12}

Undo the case with a triangle bit screwdriver, there is 7 screws total. You can then unscrew the circuit board and desolder the Tuya module.

Connect wires: 3V3, GND, RX, TX, IO1. Connect to serial-to-USB adapter set to 3.3v mode and short IO1 to ground. Flash using Tasmotizer and reassemble.