NodOn Zigbee Smart Energy Monitor vs Zemismart SPM01

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, SmartThings, Jeedom and Zigbee2MQTT as compatible gateways for this model

Zigbee 3.0 on a Tuya ZS2S module, works with any certified hub, no Tuya gateway needed

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

Accumulated, hourly, daily and monthly totals, history lives in the hub

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

Through the Zigbee hub or Home Assistant, not the device itself

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

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

Not compatible with Amazon Alexa.

Alexa has no energy meter device type and this meter has no relay to expose as a switch, so a skill has nothing to publish

Not compatible with Apple Home.

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.

Via Zigbee2MQTT or ZHA

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

NodOn lists SmartThings among the compatible gateways for this model, so it pairs with a SmartThings hub as a standard Zigbee 3.0 device

Pairs with a SmartThings hub as a standard Zigbee 3.0 device

A Zigbee end device with no IP stack and no documented serial interface, so there is nothing on the module itself to call directly; the data path belongs to whichever gateway hosts it

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, over a measurement range of 50 mA to 63 A and a base current of 10 A

Accuracy Class 1 per IEC 61557-12

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

Separate forward and reverse energy totals for solar

Inline measurement through the module's own terminals, with no current transformer involved

Inline measurement, the conductor is threaded through the body

Rated up to 63 A directly on the circuit, without a current transformer

Rated up to 63 A without a current transformer

One 1P+N circuit: the line is wired through the meter's own terminals and the neutral passes alongside, so it meters a single circuit up to 63 A

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

Voltage, current, power, power factor and energy

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