Device Comparison
IAMMETER WEM3080T vs Shelly Pro 3EM 120A vs ABB B23 112-100
A three-way comparison for three-phase monitoring, local data access, and installer-led metering.
Use this comparison when the home or small site needs three-phase visibility and the decision is between app-friendly Wi-Fi, local automation, and classic Modbus metering.
| Decision point | IAMMETER WEM3080T | Shelly Pro 3EM 120A | ABB B23 112-100 |
|---|---|---|---|
| Install fit | |||
| Phase support | 3-phase, split-phase, or three independent single-phase channels | Single-phase, split-phase, or 3-phase systems | 3-phase DIN-rail metering |
| Installation | DIN-rail Wi-Fi meter with external CT inputs | DIN-rail energy meter with 120A external CT clamps | DIN-rail direct-connected electricity meter |
| Measurement | 3-phase CT energy meter with bidirectional import/export measurement | 3-phase CT energy meter with bidirectional import/export measurement | Direct-connected 3-phase energy meter with Modbus RTU |
| Max current | 150 A | 120 A | 65 A |
| Monitoring | |||
| Protocol | Wi-Fi / HTTP / MQTT / Modbus TCP | LAN / Wi-Fi / Bluetooth / MQTT / HTTP / WebSocket / TLS | Modbus RTU |
| Local API | Yes | Yes | Yes |
| Cloud dependency | Optional cloud; local HTTP, MQTT, and Modbus TCP options are available. | Optional cloud; LAN/Wi-Fi local API, MQTT, WebSocket, and Modbus TCP are available. | Local-first Modbus RTU meter; no vendor cloud required. |
| Home Assistant | Yes | Yes | Yes |
| Solar fit | |||
| Solar import/export | Yes | Yes | Yes |
| Buying context | |||
| Price range | About $150-$220 | About $150-$220 | About $150-$300 |
| Availability | US, EU, AU, Global | US, EU, UK, Global | EU, UK, AU, Global |
| Source check | |||
| Last verified | May 15, 2026 | Unknown | Unknown |
| Product page | Official page | Unknown | Unknown |
| Documentation | Official docs | Unknown | Unknown |
Verdict
IAMMETER WEM3080T is the strongest fit when solar monitoring and cloud-or-local flexibility matter. Shelly Pro 3EM 120A is best for Shelly automation and LAN-first installs. ABB B23 fits electrician-led Modbus jobs where a traditional meter is preferred.