Shelly Plus 1PM vs Shelly Plus 2PM

The Shelly Plus 2PM wins overall because it costs less while offering two independently metered channels and a cover mode for shutters. The Shelly Plus 1PM is the better pick only when a single circuit needs its higher 16A rating, since the 2PM is rated for 10A per channel.

The second channel and its rating. The Shelly Plus 2PM controls two circuits and can interlock them to drive a roller shutter or gate motor safely, at 10A each. The Shelly Plus 1PM has one channel rated to 16A, so it takes heavier single loads.

Yes. Both report power, voltage, current and total consumption, and both list overheating, overvoltage, overcurrent and overpower protection. On the Shelly Plus 2PM the metering is per channel, so you can see the consumption of each load separately.

Yes, that is one of its main uses. Its cover and interlock mode ensures the two channels can never be energized at the same time, which is exactly what a shutter, blind or gate motor requires. The Shelly Plus 1PM has only one channel, so it cannot do this on its own.

Buy the Shelly Plus 2PM if you want two metered channels in one back box or need to automate a shutter, blind or gate. It supports dry and wet contacts, protects against overheating, overvoltage, overcurrent and overpower, runs locally with Home Assistant and comes with a 3-year warranty.

Buy the Shelly Plus 1PM when a single circuit needs the full 16A, such as a water heater or a high-current appliance, and you still want metering and the complete protection set. It also offers dry contact isolation, DC switching and the same 3-year warranty.