Shelly Pro 3EM-120 V2 whole-panel energy meter is 20% off
Shelly Pro 3EM is a DIN-rail energy meter that reports accumulated energy plus real-time voltage, current and power factor for each phase. It adds LAN connectivity on top of Shelly's Gen2 firmware, so it suits installers and serious DIYers building whole-panel monitoring into a smart-home or solar setup. Shelly lists a 5-year warranty on it.
The product page shows 123.99 against a regular 154.99 during Shelly's Energy Sale, with no code required. It is a DIN-rail device built around three-phase metering, so check that it fits your panel and service before ordering.
You have a DIN rail or enclosure and want detailed, per-phase data feeding a home automation or solar monitoring system.
You want a simple app-first monitor that clips into a standard US panel with no extra hardware or configuration.








