NodOn 3CT Zigbee Energy Meter vs NodOn Zigbee Smart Energy Monitor

The 2.4 GHz radio is Zigbee (IEEE 802.15.4), not Wi-Fi

The 2.4 GHz radio is Zigbee (IEEE 802.15.4), not Wi-Fi

Zigbee 3.0 certified, 2.4 GHz, maximum radio power +10 dBm, so it joins an existing Zigbee network and needs a compatible coordinator or gateway | NodOn lists Home Assistant, Jeedom, Zigbee2MQTT and Edalso as compatible gateways for this model

Zigbee 3.0 certified, 2.4 GHz, maximum radio power +10 dBm, so it joins an existing Zigbee network and needs a compatible coordinator or gateway | NodOn lists Home Assistant, SmartThings, Jeedom and Zigbee2MQTT as compatible gateways for this model

Not a native NodOn feature. Exporting the readings is a function of the home automation platform.

Not a native NodOn feature. Exporting the readings is a function of the home automation platform.

The meter keeps no history of its own beyond its cumulative energy registers, and NodOn ships no app: retention is whatever the host gateway or Home Assistant keeps

The meter keeps no history of its own beyond its cumulative energy registers, and NodOn ships no app: retention is whatever the host gateway or Home Assistant keeps

Not a native NodOn feature. Any cost figure is calculated by the home automation platform from the readings.

Not a native NodOn feature. Any cost figure is calculated by the home automation platform from the readings.

NodOn advertises real-time monitoring of voltage, current, power and energy but publishes no reporting interval for this model

NodOn advertises real-time monitoring of voltage, current, power and energy but publishes no reporting interval for this model

Not a native NodOn feature. Time-of-use pricing is a function of the home automation platform.

Not a native NodOn feature. Time-of-use pricing is a function of the home automation platform.

Not a native NodOn feature. Usage alerts are built in the home automation platform from the readings.

Not a native NodOn feature. Usage alerts are built in the home automation platform from the readings.

Through the compatible Zigbee gateway or Home Assistant, not on the device itself

Through the compatible Zigbee gateway or Home Assistant, not on the device itself

NodOn lists load shedding on overconsumption, PV surplus diversion and EV-charge control among the meter's uses, driven by its readings | The switching itself is done by the compatible gateway or home automation system, not by the meter, which has no relay

NodOn lists load shedding on overconsumption among the meter's uses, driven by its readings | The switching itself is done by the compatible gateway or home automation system, not by the meter, which has no relay

No switching output: the meter measures only and has no relay to cut a load

No switching output: the meter measures only and has no relay to cut a load

Fits inside the electrical panel next to the upstream protection device, with the clamps around the phase conductors

Installed in-line inside the electrical panel on an existing circuit, next to the upstream protection device

One 18 mm DIN module, with the snap-in split-core clamps closing around the phase wires

One 17.8 mm wide DIN module that clips onto the standard 35 mm rail inside the switchboard

Not compatible with Amazon Alexa.

Not compatible with Amazon Alexa.

Not compatible with Apple Home.

Not compatible with Apple Home.

Not compatible with Google Home.

Not compatible with Google Home.

Zigbee2MQTT supports this exact model, the SEM-4-3-20, and exposes per-phase voltage, current, active, reactive and apparent power, power factor, AC frequency and consumed and produced energy | NodOn also lists Home Assistant among the compatible gateways for this model | Works with Home Assistant through ZHA and through Zigbee2MQTT.

Zigbee2MQTT supports this exact model, the SEM-4-1-00, and exposes power, voltage, current, AC frequency, power factor, apparent power and both consumed and produced energy | NodOn also lists Home Assistant among the compatible gateways for this model | Works with Home Assistant through ZHA and through Zigbee2MQTT.

The radio is Zigbee 3.0 only, with no Matter certification or Matter path documented for this model

The radio is Zigbee 3.0 only, with no Matter certification or Matter path documented for this model

Nothing runs on the module itself: it is paired and configured from the Zigbee gateway, and it has only a status LED and a reset/pairing button

Nothing runs on the module itself: it is paired and configured from the Zigbee gateway, and it has only a status LED and a reset/pairing button

No native MQTT, though Zigbee2MQTT republishes the readings

No native MQTT, though Zigbee2MQTT republishes the readings

Class 1.0 to IEC 61557-12, stated as a 1% tolerance, with a measurement range of 50 mA to 70 A/120 A per phase

Class 1.0 to IEC 61557-12, stated as a 1% tolerance, over a measurement range of 50 mA to 63 A and a base current of 10 A

Bidirectional measurement reports consumption and production separately, which is what makes solar self-consumption and export readable | Zigbee2MQTT exposes total and per-phase consumed and produced energy

Bidirectional measurement reports consumption and production separately, which is what makes solar self-consumption and export readable | Zigbee2MQTT exposes the consumed total as energy and the production side as produced_energy for this exact model

Voltage, current, active and reactive power, apparent power and power factor per phase, plus AC frequency | Zigbee2MQTT exposes power_factor, power_reactive and power_apparent for phases A, B and C

Reports voltage, current, active power, apparent power, power factor and AC frequency alongside the energy totals | Zigbee2MQTT exposes power_factor, power_apparent and ac_frequency for this exact model

Rated 220-240 V single-phase and 380-415 V three-phase, so a 120/240 V North American split-phase service is out of scope

Rated 110-240 V AC 50/60 Hz as a 1P+N single-phase meter, so a 120/240 V North American split-phase service with two hot legs is out of scope