Configure your smart switch to work with Tasmota open source firmware.
Sonoff Touch EU Smart Wireless RF Wireless Wall Light Control
Using With Sonoff T1 UK 3 Gang — ESPHome
SONOFF TX-T1 - TX-T3 EU1/2/3 - WiFi - 433MHz - TASMOTA - Alexa
Sonoff TX multiple button switches in multi gang electrical box
Sonoff Smart Wall Touch Light Switch + Tasmota + OpenHAB + MQTT
Sonoff T1 - Tasmota
Sonoff TX Ultimate T5 EU 1C 1-gang smart WiFi + eWeLink-Remote
Sonoff TX Series - Tasmota
Tasmota DevGroups Wiring Diagrams
EU Devices
SONOFF TX Ultimate Review - A smart touch wall switch with
The All-New Sonoff TX Ultimate and Wall Switch Cover - Scargill's
SONOFF T3 EU AC 100-240V Gang TX Series WIFI Wall Switch 433Mhz RF
Sonoff TX Ultimate T5 EU 1C 1-channel Smart WiFi Wall Touch switch
Flashing Tasmota on Sonoff SwitchMan - NotEnoughTech