Configure your smart switch module to work with Tasmota open source firmware.
Support for Sonoff dualr3 · arendst Tasmota · Discussion #10793 · GitHub
Sonoff DUALR3 has a hidden secret - NotEnoughTech
Support for Sonoff dualr3 · arendst Tasmota · Discussion #10793 · GitHub
SONOFF Dual R3 Lite - Module WiFi actionneur pour volet roulant ou double ON/OFF - Compatible eWelink
Sonoff DualR3 Setup + Circuit Diagram FINALLY A WAY TO MAKE A SMART 2 WAY LIGHT SWITCH
DUALR3-DOC - SONOFF Official
Dual R3 WiFi Switch Intelligent, 2 Gang Switch for Garage Door, Shutters and Shutters, WiFi Smart Switch with Energy Measurement Function, 3 Working Modes, Compatible with Alexa, Google Home, Siri :
Sonoff WiFi Smart Curtain Switch Module with Power Metering TUV Certified, DualR3 Dual Relay Motorized Curtain,Blinds,Roller Shutter,Two Way Smart Switch.Works with Alexa : : DIY & Tools
Sonoff Dual R3 (switches only in HA)? - Configuration - Home Assistant Community
Sonoff Dual Smart Switch Wifi Sonoff Dual 2ch Wifi Switch - 2ch Wifi Switch Remote - Aliexpress
Support for Sonoff dualr3 · arendst Tasmota · Discussion #10793 · GitHub