What are the differences between Shelly's Energy Monitoring devices?
Shelly's Energy Monitoring devices offer a unique birds-eye view over the energy consumption of an entire building, from single devices to entire systems; in addition to energy usage, a Shelly EM can also measure how much energy is being produced from renewable energy sources like solar panels and wind turbines, delivering a holistic, intuitive overview of a building's energy profile.
With a few different Smart Energy Monitors on offer, it can be tricky to know which one is right for your use-cases - take a look at the table below for the key differences between them!
|
|
Phases |
Channels |
Maximum Current per CT* |
CT Clamp Type & Rating |
Connectivity |
Mount Type |
Best Use Case |
| Shelly Mini EM Gen4 | Single phase | 1 | 63A | Included CT Clamp (63A) | WiFi | Embedded in Device | Compact monitoring for apartments or small loads |
| Shelly EM Gen3 | Single phase | 2 | 120A | External CT Clamps (120A) | WiFi | Embedded in Device | Home/small commercial; whole house or circuit-level monitoring |
| Shelly Pro 3EM | Single phase | 3 | 400A | External CT Clamps (120A or 400A) | WiFi & Ethernet | DIN Rail | Industrial & large commercial; BMS, energy management systems |
| Shelly Pro 3EM 3CT 63 | Single phase | 3 | 63A | Included CT Clamps (63A) | WiFi & Ethernet | DIN Rail | Pro-grade 3-phase for small/medium commercial, with Modbus/REST APIs |
| Shelly 3EM-63W Gen3 | Single phase | 3 | 63 | Included CT Clamps (63A) | WiFi | Directly onto Circuit-Breakers | Residential 3-phase; smart energy monitoring with smaller loads |
*CT: Current Transformer