Shelly EM Mini Gen4 is a compact in-line energy meter for monitoring the consumption of a connected electrical circuit or appliance up to 16 A. It is designed for tight retrofit spaces such as behind wall sockets and switches and measures active power and accumulated energy without providing a switching relay.

Its Gen4 platform supports Wi-Fi, Zigbee, Bluetooth and Matter, together with local web access, schedules, scenes, scripting and secure network integrations. The device stores at least 10 days of measurement data at one-minute resolution and can also operate as a Wi-Fi or Zigbee range extender and Bluetooth gateway.