It's time to pitch similar devices against each other and compare their functions: Shelly 2.5 vs Sonoff DualR3
Sonoff Dual R3 v2 Power Monitoring Switch Module (DUALR3) Configuration for Tasmota
Sonoff Dual R3 v2 Power Monitoring Switch Module (DUALR3) Configuration for Tasmota
Shelly 2.5 vs Sonoff DualR3: A Comparison of DIY Automation Options — Eightify
Shelly or Sonoff - IOT (The internet of things) - Energy Talk
Support for Sonoff dualr3 · arendst Tasmota · Discussion #10793 · GitHub
Support for Sonoff dualr3 · arendst Tasmota · Discussion #10793 · GitHub
Shelly 2.5 vs Sonoff DualR3 - NotEnoughTech
Support for Sonoff dualr3 · arendst Tasmota · Discussion #10793 · GitHub
Sonoff DualR3 is awesome, has a secret and now it's dead