Device overview
OpenEnergyMonitor emonTx6 is a six-channel CT-based electricity monitoring node for expanding an OpenEnergyMonitor system. It is most useful when an emonPi3 or emonBase is already acting as the base station, but the circuits to monitor are in a different panel, outbuilding, or location where another set of CT inputs is needed.
Core characteristics
The emonTx6 provides six CT inputs for voltage-output current transformers and uses an emonVs voltage sensor / power supply for real and active power measurement. OpenEnergyMonitor's official shop lists 20 A, 50 A, 100 A, and 200 A CT options, so the installed CT rating should be matched to the circuit being measured rather than treated as one fixed internal current limit.
Installation and phase support
The unit is a wall-mounted monitoring node. It can be used for single-phase monitoring and 3-phase 4-wire monitoring. OpenEnergyMonitor's installation guide notes that 3-wire 3-phase systems are not supported by the referenced emonVs setup. CTs clip around the live or neutral conductor of each measured circuit, and the emonVs provides the voltage reference.
Connectivity and local data
The normal system design sends readings over built-in 433.92 MHz radio to an emonPi3 or emonBase. The official shop also describes direct USB connection to an emonPi as a wired option. With a local emonPi3 / emonBase / EmonCMS path, a vendor cloud is not required; remote EmonCMS.org posting is optional.
Fit and limitations
This page is scoped as an energy-meter / monitoring node, not a solar inverter, battery, EV charger, or standalone gateway. It can support solar or import/export monitoring when CTs are installed on the right circuits, but it is not a billing-grade meter and no formal revenue accuracy class was verified in the official source set.