Shelly 3EM Professional wifi relay 3 channels and contactor control

The Shelly 3EM is Shelly's professional three-phase power meter, recommended for both home and business use. Shelly 3ЕМ can monitor power consumption in real time for a three-phase or 3-point system or a single-phase electrical system simultaneously (up to 120A each). With Shelly 3EM you can also measure how much energy your solar system is producing and energy consumption at the same time. It can also be used to monitor power consumption in real time for each phase and compare it to the neutral to know if someone is stealing electricity.
It can automatically shut down the entire circuit if consumption or energy (prepaid energy option) reaches the set limit and has integrated relay output for contactor control.
 
Characteristics:
110-230V ± 10, 50 / 60Hz AC, Shelly 3EM is compatible with all major international voltage standards.
Small size: 3mm x 57mm x 22mm
equipped with built-in Wi-Fi
accurate power meter 3 pcs. of 120A current transformers are included with the
MQTT product, API Rest support
365-day consumption history stored on the device (even in offline mode)
Easy-to-use charts
Detailed report downloadable in CSV
Relay output for contactor control: max 10A

WiFi connection:
The Shelly3 EM - similar to other Shelly devices - has a built-in web server, meaning it can work in Access Point mode.
Can connect to your home or corporate WiFi network and be managed from the free Shelly Cloud app (available for Android and iOS)
No gateway, controller or hub needed, connects directly to WiFi as a WiFi client or access point
WiFi Protocols supported: 802.11 b / g / n (2.4 GHz)
Can work as a standalone device or connected to Shelly's Cloud
Turn on / off devices directly from your smartphone or tablet. You can manage Shelly 3EM output from the Shelly application, MQTT or Rest API
On home networks it integrates seamlessly with home automation systems via HTTP and/or UDP protocols

Programming, timers:
Choose a time and create personalized daily schedules for your devices.
Automatic start and stop at time or sunset and sunrise.

For developers:
Its factory firmware supports integration with various home automation systems.
You can handle ShellyEM output from your Shelly application, MQTT or Rest API.
The REST API documentation can be found here: http://shelly-api-docs.shelly.cloud/
Shelly 3ЕМ comes with a programming / debugging header that can be used to flash alternate firmware on the device.