Zemismart třífázový elektroměr Zigbee – třífázový elektroměr 63A pro Home Assistant (Zigbee2MQTT) a Tuya (SPM02)

Please note: this is a three-phase meter for three-phase supplies (most UK homes are single phase; see our single-phase SPM01). It’s fitted inside the distribution board by a qualified electrician. It needs a Tuya Zigbee hub or a Zigbee2MQTT coordinator (not included). It works with Home Assistant through Zigbee2MQTT. ZHA isn’t supported on this version.

Monitor all three phases from one small sensor

The Zemismart SPM02 measures a three-phase supply up to 63A per phase. Pass each phase conductor through its own hole (X, Y and Z), connect the four leads to the three phases and neutral, and you’ll see voltage, current and power for every phase. It also shows the totals for the whole supply.

No DIN rail space needed

At 53 × 46 × 21mm, it sits on the cables inside the board instead of taking up a DIN rail slot. That’s ideal for crowded commercial or domestic boards.

Built for Home Assistant

Pair it with a Zigbee2MQTT coordinator and every measurement appears in Home Assistant:

• Per-phase and total voltage, current, active power, reactive power, apparent power and power factor
• Imported and exported energy, ready for the Home Assistant Energy dashboard
• Adjustable reporting intervals in Zigbee2MQTT (30 seconds by default, down to 1 second)
• An energy reset option to zero the counters

Solar import and export

The SPM02 measures energy in both directions, so with solar panels you can see how much you take from the grid and how much you send back. In Home Assistant through Zigbee2MQTT, these values feed the Energy dashboard’s grid and solar views. The Tuya app doesn’t show the two-way data.

Tuya app monitoring

With a Tuya Zigbee hub, you can view live readings and energy history in the Smart Life or Tuya Smart app, and set alerts for over- or under-voltage, high power, high temperature, high consumption and unbalanced load across the phases. The default reporting interval in the Tuya app is 600 seconds.

Accurate to within 1%

Zemismart states active energy accuracy within 1%. This is a monitoring device, not a billing meter.

Installation

Pass the phase conductors through the holes in the direction of the printed arrow (energy flow), and connect the brown (X), black (Y), grey (Z) and blue (N) leads to the matching phases and neutral. The voltage leads must match the conductors in the holes. Don’t install it downstream of contactors, variable-speed drives or motor starters. Turn off all supplies before work.

Specifications

What’s in the box

• 1 × SPM02 three-phase Zigbee energy sensor
• Quick installation guide

Works well with

• Single-phase SPM01 energy meter for individual circuits
• Zemismart M1 Pro hub or M6 gateway for the Tuya app
• Smart immersion heater switch, to divert surplus solar with a Home Assistant automation
• Track water too: see the 213E smart water meter.

User manual

Download the SPM02 user manual (PDF)

Frequently asked questions

Do I have a three-phase supply?

Most UK homes are single phase. Three-phase supplies are more common on farms, in commercial premises and in larger or newer homes. Your electrician can confirm. For single phase, choose the SPM01.

Does it work with Home Assistant?

Yes, through Zigbee2MQTT with a Zigbee coordinator. This version doesn’t support ZHA.

Can I see solar export?

Yes, in Home Assistant through Zigbee2MQTT. The Tuya app doesn’t display the two-way data.

Will it fit around my cables?

Each hole is 9.8mm across, for one phase conductor. Larger supply cables may not fit, so check with your electrician.

Can I install it myself?

No. It must be fitted inside the distribution board by a qualified electrician.