Device Comparison
Shelly EM vs Shelly EM Gen3 vs Shelly Pro EM-50
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At A Glance
Key fit signals before the full table
A quick pass over the most decision-shaping details for each device in this featured comparison.
Shelly EM
- Phase
- Single-phase, two-channel monitoring
- Installation
- Wall box / electrical cabinet / near-appliance retrofit with external current transformers
- Measurement
- Single-phase two-channel CT energy meter
- Max current
- 80 A
Shelly EM Gen3
- Phase
- Single-phase monitoring, with two current measurement channels
- Installation
- Panel-mounted Wi-Fi energy monitor with external CT clamps
- Measurement
- Two-channel CT energy meter with import/export-capable measurements
- Max current
- 50 A
Shelly Pro EM-50
- Phase
- Single-phase
- Installation
- DIN rail
- Measurement
- CT clamp
- Max current
- 50 A
| Install fit | |||
|---|---|---|---|
| Phase support | Single-phase, two-channel monitoring | Single-phase monitoring, with two current measurement channels | Single-phase |
| Installation | Wall box / electrical cabinet / near-appliance retrofit with external current transformers | Panel-mounted Wi-Fi energy monitor with external CT clamps | DIN rail |
| Measurement | Single-phase two-channel CT energy meter | Two-channel CT energy meter with import/export-capable measurements | CT clamp |
| Max current | 80 A | 50 A | 50 A |
| Nominal voltage | Unknown | 110-240 V AC | 100-260 V AC |
| Meter fit | |||
| Accuracy class | Unknown | Unknown | Class B (active energy) |
| Current sensing | 1 x 50A CT included; supports up to 2 CTs total, with optional additional CT50A or CT80A | CT 50A included; CT 80A optional | 2 x CT channels up to 50A |
| Gateway fit | |||
| Connectivity | Unknown | Unknown | Ethernet, Wi-Fi, Bluetooth |
| Monitoring | |||
| Protocol | Wi-Fi / Bluetooth / MQTT / HTTP / WebSocket / RPC | Wi-Fi / Bluetooth / MQTT / HTTP / WebSocket / RPC | Wi-Fi / Ethernet / Bluetooth / MQTT / WebSocket / HTTPS / UDP / Modbus TCP |
| Local API | Yes | Yes | Yes |
| Cloud dependency | Optional cloud; can run locally over Wi-Fi with an embedded web interface and local protocols including MQTT, WebSocket, HTTP, and RPC. | Optional cloud; local web interface, scripting, RPC, MQTT, and WebSocket are available. | Optional |
| Home Assistant | Yes | Yes | Yes |
| Solar fit | |||
| Solar import/export | No | Yes | Yes |
| Buying context | |||
| Price range | Unknown | About $50-$90 | About EUR 84.90 / USD 119.99 from Shelly official stores during the 2026-05 review |
| Availability | EU store / USA store / region-dependent Shelly availability | US, EU, UK, Global | EU, US |
| Source check | |||
| Last verified | May 18, 2026 | May 18, 2026 | May 18, 2026 |
| Product page | Official page | Official page | Official page |
| Documentation | Official docs | Official docs | Official docs |