Configure your smart switch module to work with Tasmota open source firmware.
Shelly Pro 2PM v.1
Shelly Plus 2PM - Shelly SA
Shelly PLUS 2PM Relay Switch With Power Metering 2X 10A User Guide
Shelly Plus 2PM - Shelly Digital
Shelly Plus 2PM
SHELLY - WiFi dual switch module with roller shutter mode and consumption measurement (Shelly Plus 2PM)
Shelly 2PM - Problème mode cover - Entraide Home Assistant - Home Assistant Communauté Francophone
Relay Shelly Plus 2PM, shelly plus 2pm
Shelly Plus 2PM Switch Module (SNSW-002P16EU) Configuration for Tasmota