Country
United Kingdom
Catalog devices
2
Manufacturer

OpenEnergyMonitor devices

OpenEnergyMonitor provides open-source hardware and software for electricity, solar, storage, heat-pump, and environmental monitoring, including emonPi, emonTx, emonVs, emonCMS, and related sensors.

Energy Meter Official site available
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Catalog devices

OpenEnergyMonitor products in the EnergyMeterHub catalog

OpenEnergyMonitor emonPi3 6-Channel Energy Monitor product image
Energy Meter Single-phase, North American split-phase, and 3-phase 4-wire; 3-wire 3-phase unsupported.

OpenEnergyMonitor emonPi3 6-Channel Energy Monitor

An open-source, local-data-friendly 6-channel CT energy monitor with integrated Raspberry Pi and emonCMS for households and advanced users who want flexible monitoring across consumption, solar, EV charging, batteries, and heat pumps.

Ethernet / Wi-Fi / MQTT / emonCMS / 433.92 MHz OpenEnergyMonitor radio Indoor wall mount with emonVs. CTs clip around live or neutral, not both; hardwired emonVs supply requires a suitably competent installer. Home Assistant Local API
OpenEnergyMonitor emonTx6 product image
Energy Meter Single-phase and three-phase four-wire AC; three-phase three-wire is unsupported.

OpenEnergyMonitor emonTx6

A six-channel wireless energy-monitoring expander node for OpenEnergyMonitor systems, designed to add CT inputs in another panel or building area and send readings to an emonPi3 or emonBase.

433.92 MHz radio / USB-C serial / optional emonWiFi Wi-Fi and MQTT Wall-mounted node with external emonVs voltage/power sensor and clip-on CTs; competent panel installation required. Home Assistant Local API
Brand overview

About OpenEnergyMonitor

OpenEnergyMonitor is a UK-based open-source energy monitoring project and shop. Its hardware and software stack is built around local data logging, emonCMS dashboards, MQTT, and expandable CT-based monitoring for homes, solar systems, heat pumps, EV charging, and light commercial installations.

For EnergyMeterHub device records, OpenEnergyMonitor products should be treated as local-data-friendly monitoring hardware. When a page represents an all-in-one emonPi product, use the device's own CT inputs, emonVs voltage-sensing requirement, emonCMS role, and official shop configuration options rather than borrowing values from older emonPi or emonTx generations.

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