Shelly
1 Gen3
Shelly 1 Gen3 is a Wi-Fi relay module with a dry, potential-free contact that wires behind an existing switch to add smart on/off control to almost any light or appliance.
The dry contact can switch low-voltage and mains loads, including gates, garage doors, and boilers. No power metering on this model. The native Shelly integration gives local control with no cloud required, with Bluetooth for setup and MQTT support, and a firmware update adds Matter over Wi-Fi for cross-ecosystem control.