Typically used for
Energy saving
Contactor control
Power monitoring
Key Features
Power metering
Current metering up to 120 A per channel
One contactor control (or load up to 2A)
Easy control through the Shelly app, various protocols, and platforms, as well as voice assistants
| POWER | |
| Power supply AC | 110-240 V, 50/60Hz |
| Power supply DC | No |
| SPECIAL FUNCTIONS | |
| Contactor Control | Yes – max 2A |
| Roller shutter mode | No |
| Device temperature protection | Yes |
| Overload protection | No |
| Power measurement | Yes |
| FEATURES | |
| Channels | 2 Channel (Single phase) |
| Operational temperature | -20 °C to 40 °C |
| Device power consumption | < 1 W |
| Intelligent On/Off | Yes |
| Local and remote control | Yes |
| Sunrise/Sunset | Yes |
| Weekly Schedule | Yes |
| UL Listed option | No |
| CONNECTIVITY | |
| RF band: | 2401-2483 MHz |
| Max. RF power: | <20 dBm |
| Wi-Fi protocol: | 802.11 b/g/n |
| Wi-Fi Range: | Up to 30 m / 100 ft indoors and 50 m / 160 ft outdoors |
| DIMENSIONS | |
| Size | 39mm x 36mm x 17 mm |
What are the differences between the different generations of Shelly products?
Each new generation adds more power, memory, and features:
Gen 1 offers basic control;
Gen 2 (Plus Series, Mini Series, Pro Series) adds Bluetooth, scripting, and better security;
Gen 3 improves performance, adds Matter (starting from firmware version 1.6.0 or newer) and advanced monitoring;
Gen 4 offers multi-protocol connectivity, featuring Wi-Fi 6, Bluetooth, Zigbee, and Matter.
Can I control the device via Bluetooth?
No, the protocol is used only for device inclusion, allowing for quick and easy setup through the Shelly Smart Control app.
For bluetooth control it is required to have another Bluetooth device such as Shelly BLU Button or Shelly BLU Motion to interact.
Additionally, Shelly devices can function as a BLE gateway, bridging Shelly BLU devices to your Wi-Fi network.
Is it possible to use the device without a hub?
Yes, Shelly devices (except for Wave devices) operate independently without the need for a hub. They connect directly to your Wi-Fi network, and you can control them via the Shelly Smart Control app, web interface, or through integrations with platforms like Google Home, Alexa, Home Assistant and Samsung SmartThings.
Use cases
Wi-Fi Operated
Connect Shelly EM to your Wi-Fi network. No HUB required!
Power Monitoring
Shelly EM monitors monophase electrical systems with up to 2 points simultaneously.
Contactor control
Shelly EM has an integrated relay with a rated current of 2A per output for contactor control.
365 days of data storage
The measurements from Shelly EM are stored in a free cloud for 365 days.