Zemismart SPM01-D2TZ | 1-phase 63A - Zigbee Smart Energy Meter

The Zemismart SPM01-D2TZ is a compact smart energy meter that provides real-time insight into your power consumption per group or circuit. With a width of 18mm and dimensions of 21 x 18 x 48mm, this Zigbee energy meter fits perfectly above your installation circuit breaker or earth leakage circuit breaker, without taking up extra space in the meter cupboard. Measures voltage, current, power, power factor and energy consumption with an accuracy of 1% . Perfect for Home Assistant (via Zigbee2MQTT), Homey (via the official Zemismart app), Tuya Smart Life and Domoticz. The measurement data is updated every 5 seconds and is ideal for building your own Dynamic Load Balancing automations , for example to pause your charging station in the event of an impending overload. The Zemismart SPM02-D2TZ is available for 3-phase monitoring.

Key Features

Compact 18mm width fits above circuit breakers
Measuring 21 x 18 x 48 mm (H x W x D), the SPM01-D2TZ fits perfectly above standard 18 mm wide circuit breakers. Mount it directly above your residual current device (RCBO) or circuit breaker to measure power consumption without taking up extra space in the meter panel. Its compact design supports a wide voltage range (110-240 V AC), ideal for European and international installations.

Measurement data for self-built Dynamic Load Balancing
The SPM01-D2TZ measures real-time power consumption from your meter box with a 5-second update interval. With this fast measurement data, you can build your own Dynamic Load Balancing automations in Home Assistant, Homey, Domoticz, or Tuya. For example, receive a notification when consumption exceeds your limit, or automatically pause your charging station to prevent overloading your main fuse. The SPM01-D2TZ provides the data; you define the logic.

Homey integration via official Zemismart app
The SPM01-D2TZ works perfectly with Homey via the official Zemismart app from the Homey App Store. Use the energy meter in Flows to create automations based on power consumption, wattage, and voltage. Trigger actions when power exceeds your limits, or create graphs of your energy consumption by hour, day, or month.

Home Assistant integration via Zigbee2MQTT
The SPM01-D2TZ supports Zigbee 2MQTT out of the box and displays all readings directly in Home Assistant. Create energy dashboards, automations based on consumption, and detailed hourly, daily, and monthly graphs.
Note: Does not work with ZHA, only with Zigbee2MQTT.

Highly accurate measurements within 1% tolerance
Measure voltage, current, power, power factor, and energy consumption with 1% accuracy according to IEC 61557-12 Class 1. Reliable measurements for professional energy management and accurate cost calculations.

Alarm notifications for deviations
Set alerts for high/low voltage, high power, or high consumption. Receive notifications in your smart home app when values ​​deviate from the norm, allowing you to intervene immediately if problems arise.

Technical specifications

• Model: Zemismart SPM01-D2TZ (1-phase version)
• Dimensions: 21 x 18 x 48 mm (H x W x D)
• Width: 18mm (fits above standard circuit breakers)
• Connectivity: Zigbee (Tuya compatible)
• Compatible with: Zigbee2MQTT, Home Assistant, Homey (official Zemismart app), Tuya Smart Life (Tuya Zigbee Hub required), Domoticz (with Zigbee4Domoticz plugin)
• Not compatible with: ZHA (Zigbee Home Automation)
• Update interval: 5 seconds (fast reporting)
• Voltage: 110-240V AC, 50/60 Hz (wide voltage range)
• Base current (Ib): 10A
• Maximum current (Imax): 63A
• Starting current: 50mA
• Nominal insulation voltage: 250V
• Measurement accuracy: Class 0.5 (voltage), Class 1 (current, power, energy) according to IEC 61557-12
• Measured values: Voltage, current, power, power factor, energy (hour/day/month)
• Alarms: Over/under voltage, high power, high consumption
• Protection class: IP20
• Operating temperature: -25°C to 60°C
• Overvoltage category: III
• Impulse voltage: 4kV
• Power consumption: 0.5W normal, 1W during pairing
• Also available: Zemismart SPM02-D2TZ (3-phase version)

Practical applications

Self-built Dynamic Load Balancing for charging stations
Measure real-time power consumption from your meter box with a 5-second update and use this data to build your own automations in Home Assistant, Homey, Domoticz, or Tuya. For example, if total consumption exceeds 80% of your main fuse, automatically pause your charging station. Or receive a notification on your phone so you can intervene manually. The SPM01-D2TZ measures consumption, and you build the automation that suits your needs.

Charging station monitoring
Install the SPM01-D2TZ above the circuit breaker of your electric charging station to see exactly how much energy your car is using. Thanks to the 5-second update interval, you can see real-time changes in power consumption while charging. Ideal for business reimbursements, energy cost calculations, or monitoring charging sessions.

Per-circuit monitoring
Place multiple SPM01-D2TZ meters above different circuit breakers in your meter box to see which circuits consume the most power. Discover energy hogs like outdated refrigerators, heaters, or always-on appliances. With only 18mm of width per meter, you can monitor multiple circuits without taking up space.

Solar panel monitoring
Measure consumption on specific circuits and compare it with the yield from your solar panels. Build automations to automatically start washing machines, dryers, and other appliances when the sun is shining and sufficient solar energy is available.

Rental properties and student rooms
Monitor energy consumption per apartment or room for accurate energy billing. The compact dimensions allow you to install multiple meters on top of each other without compromising space in the meter box.

Installation and use

1. Turn off the electricity at the main switch
2. Please refer to product images for correct installation and pay close attention to the flow direction.
3. Check whether there is sufficient space above your circuit breaker (21 mm height required)
4. Mount the SPM01-D2TZ above the circuit breaker or earth leakage circuit breaker
5. Connect the L (phase) and N (neutral) cables to the SPM01-D2TZ according to the installation plan
6. Turn the power back on
7. Hold the reset button for 3-5 seconds until the LED flashes quickly (pairing mode)
8. Add the meter in Zigbee2MQTT, Homey (via Zemismart app), Tuya app (with Tuya Zigbee Hub) or Domoticz (with Zigbee4Domoticz plugin)
9. Configure alarms and graphs in your chosen platform

Note: Installation must be carried out by a certified electrician in accordance with NEN1010 standards. Never work on the meter box without switching off the main switch. Check the current direction on the product images for correct installation.

Homey integration via Zemismart app

The Zemismart SPM01-D2TZ works with Homey via the official Zemismart app from the Homey App Store. After installing the app and pairing the energy meter, you'll see the following information in Homey:

• Power (capacity) - Current consumption in Watts
• Voltage (voltage) - Current voltage in volts
• Current (stroom) - Current strength in Ampere
• Energy (energy) - Total consumption in kWh

Use the SPM01-D2TZ in Homey Flows to create automations. For example:

Flow example 1: If the power exceeds 16000W, send a push notification and switch off the charging station.
Flow example 2: If the voltage drops below 220V, send a warning.
Flow example 3: Create a daily report of energy consumption and send it by email.

The Zemismart app for Homey supports both Homey Pro and Homey Bridge . The 5-second updates ensure fast responses in your flows.

Home Assistant integration via Zigbee2MQTT

The Zemismart SPM01-D2TZ is automatically recognized in Zigbee2MQTT and offers the following measurements in Home Assistant:

• Energy - Total energy consumed (kWh), hourly/daily/monthly statistics
• Power - Current power (W)
• Voltage - Current Voltage (V)
• Current - Current (A)
• Power factor - Labor factor
• Link quality - Zigbee signal strength

This data is updated every 5 seconds and can be used directly in the Home Assistant Energy Dashboard for detailed consumption graphs. You can also create your own automations for Dynamic Load Balancing. For example:

Automation example: If the SPM01-D2TZ measures that the total power exceeds 16kW (70% of the 25A main connection), send a notification and automatically pause your smart charging station via a switch entity. When consumption drops below 12kW, the charging station automatically resumes operation.

Important: The SPM01-D2TZ does not work with ZIGBEE Home Automation (ZHA). Use ZigBEE2MQTT for Home Assistant integration.

Tuya Smart Life integration

To use the Tuya Smart Life app, you need a Tuya Zigbee Hub (not included). Compatible hubs include:

• Tuya Zigbee Gateway
• Must Zigbee Hub
• Smart Life Zigbee Gateway
• Other Tuya-compatible Zigbee hubs

After connecting to your Tuya Zigbee Hub, you'll see real-time measurements (updated every 5 seconds), energy statistics, and alarms in the Smart Life app. Here, too, you can create your own scenes and automations to pause devices when power consumption is too high.

Domoticz integration

The SPM01-D2TZ works with Domoticz via the Zigbee4Domoticz plugin . After installing the plugin, the energy meter is automatically recognized, and you can use all readings (updated every 5 seconds) for graphs, custom automations, and energy monitoring in Domoticz.

SPM01-D2TZ vs SPM02-D2TZ

Zemismart SPM01-D2TZ (1-phase): Measures a single phase. Ideal for individual groups and single-phase circuits. Dimensions: 21 x 18 x 48 mm (H x W x D), ultra-compact with an 18 mm width.

Zemismart SPM02-D2TZ (3-phase): Measure all three phases simultaneously (L1, L2, L3). Ideal for mains connections, 3-phase consumers, heat pumps, and large systems. Dimensions: 53 x 21 x 46 mm (W x H x D).

Choose the SPM01-D2TZ for individual circuits and single-phase monitoring. Choose the SPM02-D2TZ for three-phase applications, mains connection, heat pumps, and large consumers. Both operate identically, only the number of phases measured differs.

Plus points

• Compact 18mm width fits perfectly above circuit breakers
• Fast updates every 5 seconds for real-time monitoring
• Official Homey app for easy integration with Homey Pro and Homey Bridge
• Provides measurement data for custom-built Dynamic Load Balancing automations
• High accuracy within 1% tolerance for energy measurement (IEC 61557-12 Class 1)
• Wide voltage range 110-240V AC
• Native Zigbee2MQTT support for Home Assistant
• Works with Domoticz via Zigbee4Domoticz plugin
• Measures up to 63A, suitable for most household circuits
• Alarm notifications for abnormal voltage and consumption
• Energy statistics per hour/day/month
• Low power consumption (0.5W typical)
• Affordable for per-circuit monitoring

Negative points

• Does not work with ZHA (only Zigbee2MQTT for Home Assistant)
• Tuya Zigbee Hub required for Smart Life app (not included)
• Installation requires a certified electrician
• 1-phase only (for 3-phase you need the SPM02-D2TZ )
• Zigbee hub/coordinator required for use

Frequently Asked Questions

Does the Zemismart SPM01-D2TZ work with Homey?

Yes, the SPM01-D2TZ works perfectly with Homey via the official Zemismart app from the Homey App Store. The app works with both Homey Pro and Homey Bridge. You can use the energy meter in Flows for automations based on power, voltage, and energy consumption.

Does the Zemismart SPM01-D2TZ work with Home Assistant?

Yes, via Zigbee 2MQTT. The SPM01-D2TZ is automatically recognized and provides all measured values ​​as entities in Home Assistant. ZHA is not supported.

What is the difference between SPM01-D2TZ and SPM02-D2TZ?

The SPM01-D2TZ is for single-phase monitoring (18mm wide, 21x18x48mm). The SPM02-D2TZ is for three-phase monitoring (53mm wide, 53x21x46mm). Both operate identically and have the same functions; only the number of phases measured differs. Choose the SPM01-D2TZ for individual circuits. Choose the SPM02-D2TZ for mains connections, heat pumps, and three-phase consumers.

How quickly are the measurements updated?

The SPM01-D2TZ sends an update to your ZigBee hub/coordinator every 5 seconds . This enables real-time monitoring and is ideal for Dynamic Load Balancing automations where fast response is essential.

Can the SPM01-D2TZ automatically control Dynamic Load Balancing?

No, the SPM01-D2TZ is a measuring device that only provides data. You need to build Dynamic Load Balancing yourself using automations in Home Assistant, Homey, Domoticz, or Tuya. The SPM01-D2TZ measures consumption every 5 seconds; you build the logic that, for example, pauses your charging station when it's about to overload or sends you a notification.

How do I build a Dynamic Load Balancing automation myself?

In Home Assistant, you can create an automation that triggers when the SPM01-D2TZ measures a certain power level (for example, >16kW with a 25A connection). The action can be: pause a smart switch (charging station), send a notification, or reduce the charging power. When consumption drops again, the automation resumes charging. You do need a controllable smart switch or charging station. In Homey, you can create a similar flow with the "The power has changed" trigger.

Do I need a Tuya Zigbee Hub?

Only if you want to use the Tuya Smart Life app. For Home Assistant (via Zigbee2MQTT), Homey (via the Zemismart app), or Domoticz (via Zigbee4Domoticz), use your own Zigbee coordinator/dongle or the built-in Zigbee in Homey Pro.

Does this work with ZHA?

No, the SPM01-D2TZ does not work with ZIGBEE Home Automation (ZHA). Use ZigBEE2MQTT for Home Assistant integration.

How many SPM01-D2TZ meters can I use?

As much as your Zigbee network can handle. With a good Zigbee coordinator and routers, you can install dozens of meters in a single electrical panel for per-circuit monitoring. The compact 18mm width makes it easy to mount multiple meters above multiple circuit breakers.

Does an electrician need to install this?

Yes, installation in the meter box must be carried out by a certified electrician in accordance with NEN1010 standards. Never work on the meter box without switching off the main switch. Pay close attention to the current flow during installation.

Will this fit above any circuit breaker?

The SPM01-D2TZ is 18mm wide and fits over standard 18mm wide circuit breakers. Before installation, ensure there is sufficient vertical clearance (21mm height required).

Does this work with Domoticz?

Yes, via the Zigbee4Domoticz plugin. After installing the plugin, the SPM01-D2TZ is automatically recognized in Domoticz.

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