![](../../wp-content/uploads/2020/02/shelly_wireless.png)
Wireless
Shelly 3EM can be connected to any Wi-Fi network or can operate as an Access Point.
![](../../wp-content/uploads/2020/02/shelly_control_remotley.png)
Control remotely
Control Shelly 3EM directly from your smartphone or tablet and manage its output from the Shelly Cloud app, MQTT, or Rest API.
![](../../wp-content/uploads/2020/02/shelly_highly_compatible.png)
Highly compatible
Shelly 3EM is compatible with both Android and iOS.
![](../../wp-content/uploads/2020/04/overpower.png)
Overconsumption and over energy protection
Shelly 3EM will automatically turn off the whole circuit if consumption or energy reaches the set limit.
![](../../wp-content/uploads/2020/02/shelly_sunrise_schedules.png)
Sunrise/Sunset schedules
Automatically follow the sun and turn Shelly 3EM ON/OFF based on the sunrise and sunset hours.
![](../../wp-content/uploads/2020/02/shelly_weekly_schedules.png)
Weekly schedules
Choose a time and create custom daily schedules for your Shelly 3EM.
![](../../wp-content/uploads/2020/04/guard.png)
Anti energy theft protection
Monitor real-time energy consumption for each phase and compare it to the neutral to know if someone is stealing electricity.
![](../../wp-content/uploads/2020/03/shelly_power_metering.png)
Monophase systems
Shelly 3ЕМ can also monitor monophase electrical systems with up to 3 points simultaneously.
Why Shelly 3EM
The professional 3-phase energy meter.
Shelly 3EM can calculate 2-way consumption: produced and used energy for each of the three phases. The device can be configured to measure three separate points of a mono-phase electrical system and measure each of them separately.
![](../../wp-content/uploads/2020/06/Shelly_3EM.png)
For Developers
Shelly 3EM comes with a programming/debug header that can be used for flashing alternative firmware to the device. It has ESP8266 inside, with 4MB flash. A USB-to-UART adapter is needed as well as a reliable 3.3V power supply with at least 350 mA drive capability.