2026 verdict
Two channels and a shutter mode settle this relay comparison for the
Shelly Plus 2PM.
It drives two circuits from one unit, its interlock and cover mode automates roller shutters, curtains, awnings and garage doors, and it adds overheating, overvoltage, overcurrent and overpower protection with a three-year warranty. The
Switchbot Relay Switch 1PM is the single-channel retrofit that reaches the widest ecosystems, running Matter, Apple HomeKit, Alexa, Google Home, SmartThings and Home Assistant, with dry contact and wireless switch modes, but only one channel and no cover mode. Pick the
Shelly Plus 2PM for shutters, gates or a duplex switch box, and the
Switchbot Relay Switch 1PM for one switch behind an outlet in a mixed smart home.
What owners say
Owners of both relays describe fitting them behind an existing switch and appreciating local or app control without rewiring the wall, and both groups like energy monitoring for keeping an eye on an appliance. Shelly Plus 2PM owners lean on trust built over many units, praising the cover and interlock mode that turns a plain switch into up, down and position control for shutters and awnings, plus fully local Home Assistant operation; their complaints are the live and neutral requirement and a unit that runs warm. Switchbot Relay Switch 1PM owners single out easy pairing into Matter, HomeKit or Home Assistant, fast switching and the overload protection, and they warn that energy data does not reach Matter hubs and that setup needs a SwitchBot account.
