Shelly 1 Gen3 vs Shelly Plus 1

The Shelly Plus 1 edges it overall, with better owner ratings, documented overheating protection and a 3-year warranty. The Shelly 1 Gen3 is cheaper and more modern in terms of platforms, adding Matter and Apple HomeKit support and working without a neutral wire, so it wins on integrations and installation flexibility.

Wiring and platforms. The Shelly 1 Gen3 needs no neutral wire and supports Matter and Apple HomeKit. The Shelly Plus 1 requires a neutral at the install point and has no Matter or HomeKit support, but it lists overheating protection and comes with a 3-year warranty.

Yes. Both the Shelly 1 Gen3 and the Shelly Plus 1 offer dry and wet contact modes, so either can isolate the relay from line voltage to drive a gate motor, a boiler or a doorbell circuit, and either can switch a powered load directly when wired that way.

No. Neither the Shelly 1 Gen3 nor the Shelly Plus 1 has energy monitoring, which is the main reason to step up to a PM version such as the Shelly Plus 1PM or the Shelly 1PM Gen4 if you want to track power, voltage and total consumption.

Buy the Shelly Plus 1 if you have a neutral wire and want a proven, well-reviewed relay with overheating protection, a UL-listed build, dry contact isolation, AC up to 16A or low-voltage DC loads, and a 3-year warranty. It runs entirely locally with Home Assistant if you prefer no cloud.

Buy the Shelly 1 Gen3 if your switch box has no neutral wire, or if you want Matter and Apple HomeKit support alongside Alexa, Google Home, SmartThings and Home Assistant. It is the cheaper module, runs from AC or DC, and supports on-device scripting for more advanced automations.