Device Comparison
IAMMETER WEM3080 vs Shelly Pro EM-50
A focused comparison for single-phase solar and circuit monitoring with local integration options.
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Which To Choose
Start with the practical fit, then read the table.
IAMMETER WEM3080
Best fit when single-phase systems., solar import/export visibility, and local dashboards and Home Assistant.
Shelly Pro EM-50
Best fit when single-phase, two measurement channels; official wiring documentation also covers split-phase live A/B context., solar import/export visibility, and local dashboards and Home Assistant.
Use this comparison when choosing a compact single-phase meter for solar import/export, Home Assistant, MQTT, or local dashboard work.
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.
IAMMETER WEM3080
- Phase
- Single-phase systems.
- Installation
- DIN-rail single-phase meter with an external split-core CT.
- Measurement
- Single-channel, single-phase CT-based bidirectional energy meter for one measurement point: grid side, solar-inverter output, branch circuit, or dedicated load.
- Max current
- 250 A
Shelly Pro EM-50
- Phase
- Single-phase, two measurement channels; official wiring documentation also covers split-phase live A/B context.
- Installation
- Indoor DIN-rail installation with two external 50 A CTs; 100-260 V AC supply; qualified-electrician installation.
- Measurement
- Two-channel single-phase external-CT measurement of electrical parameters and four-quadrant consumption/production flows.
- Max current
- 50 A
Before You Decide
Checks that matter before price.
- Confirm your supply type first: single-phase, split-phase, or three-phase.
- Decide whether DIN-rail wiring, CT clamps, or utility-meter access fits your switchboard.
- Choose between cloud convenience and local data access before comparing prices.
- For solar homes, make sure import, export, and load readings are measured at the right point.
| Install fit | ||
|---|---|---|
| Phase support | Single-phase systems. | Single-phase, two measurement channels; official wiring documentation also covers split-phase live A/B context. |
| Installation | DIN-rail single-phase meter with an external split-core CT. | Indoor DIN-rail installation with two external 50 A CTs; 100-260 V AC supply; qualified-electrician installation. |
| Measurement | Single-channel, single-phase CT-based bidirectional energy meter for one measurement point: grid side, solar-inverter output, branch circuit, or dedicated load. | Two-channel single-phase external-CT measurement of electrical parameters and four-quadrant consumption/production flows. |
| Max current | 250 A | 50 A |
| Nominal voltage | 80-265 VAC | 100-260 V AC |
| Meter fit | ||
| Accuracy class | Class 1 active energy | Class B active energy (IEC 62053-21); Shelly states 1% measurement accuracy. |
| Current sensing | One external split-core CT; official 150 A and 250 A options use 16 mm and 24.5 mm apertures respectively. | Two included external 50 A CTs, one per IA/IB channel; both channels measure the same phase. |
| Gateway fit | ||
| Connectivity | Unknown | Ethernet, Wi-Fi, Bluetooth |
| Monitoring | ||
| Protocol | Wi-Fi / HTTP API / MQTT / TCP / TLS | Ethernet / Wi-Fi / Bluetooth provisioning / MQTT / HTTP / WebSocket / RPC / Modbus TCP |
| Local API | Yes | Yes |
| Cloud dependency | Optional. Local HTTP API, MQTT, Modbus/TCP and Home Assistant do not require cloud; the official 150 A store package includes Lifetime Basic cloud. | Optional Shelly Cloud; local Ethernet/Wi-Fi use supports web UI, RPC, MQTT, HTTP, WebSocket, Modbus TCP, scripting, and local data export. |
| Home Assistant | Yes | Yes |
| Solar fit | ||
| Solar import/export | Yes | Yes |
| Buying context | ||
| Price range | About USD 68-$88 depending on channel and timing | USD 107.99 sale (USD 119.99 regular) / EUR 101.90 incl. VAT from official stores on 2026-10-13 |
| Availability | Global online availability through IAMMETER purchase channels; local warehouse and marketplace options vary by shipping country. | United States and Europe via official Shelly stores; Shelly Europe advertises worldwide shipping, subject to destination eligibility, tax and stock. |
| Source check | ||
| Last verified | Sep 27, 2026 | Oct 13, 2026 |
| Product page | Official page | Official page |
| Documentation | Official docs | Official docs |
Verdict
Choose IAMMETER WEM3080 for a solar-monitoring-first meter with IAMMETER Cloud and local API options. Choose Shelly Pro EM-50 when Shelly ecosystem fit, LAN wiring, and flexible local automation matter more.
FAQ
Common decision questions.
Which energy meter should I choose?
Choose the option that matches your installation constraints and data path first. For IAMMETER WEM3080 vs Shelly Pro EM-50, the full table is most useful after you know whether local data access, cloud convenience, backup behavior, solar visibility, or expansion matters most.
What should I check before comparing prices?
Check installation fit, required accessories, official documentation, monitoring platform support, and any unknown fields in the source-checked table. Price is only useful once those constraints are clear.
Can these devices work with local dashboards or Home Assistant?
IAMMETER WEM3080, Shelly Pro EM-50 list Home Assistant support in the catalog. IAMMETER WEM3080, Shelly Pro EM-50 are marked with local API support. Confirm firmware, region, and integration maturity before treating this as a final compatibility guarantee.
Are unknown fields a reason to avoid a device?
Not always. Unknown means the field was not confirmed from the reviewed source data. Treat it as a question for the installer, reseller, or manufacturer before making a purchase decision.
Does the verdict replace the specification table?
No. The verdict is a practical shortcut. Use the table to confirm the exact constraints that matter for your home, especially installation, monitoring, and support details.