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Develco EMIZB-132

Wattle AMS HAN power-meter sensor. Works with Zigbee2MQTT with no vendor hub or cloud: it pairs with a Zigbee stick and shows up in Home Assistant.

Vendor
Develco
Model
EMIZB-132
Type
Other devices
Power
mains: usually a router that extends the mesh
Firmware updates (OTA)
yes, through Zigbee2MQTT

Find it in shops: AliExpress

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What it exposes

FeaturePropertyValuesControl
PowerpowerWread only
Power reactivepower_reactiveVArread only
Interface modeinterface_modenorwegian_han, norwegian_han_extra_load, aidon_meter, kaifa_and_kamstrupsettable
VoltagevoltageVread only
CurrentcurrentAread only
EnergyenergykWhread only
Produced energyproduced_energykWhread only
Voltage phase Bvoltage_phase_bVread only
Voltage phase Cvoltage_phase_cVread only
Current phase Bcurrent_phase_bAread only
Current phase Ccurrent_phase_cAread only

MQTT: state and commands

Zigbee2MQTT publishes the device state to zigbee2mqtt/my_device (my_device is the name you give the device). An example message:

{
  "power": 12.4,
  "power_reactive": 0,
  "interface_mode": "norwegian_han",
  "voltage": 230,
  "current": 0.06,
  "energy": 3.21,
  "produced_energy": 0,
  "voltage_phase_b": 0,
  "voltage_phase_c": 0,
  "current_phase_b": 0,
  "current_phase_c": 0,
  "linkquality": 120
}

Send commands to zigbee2mqtt/my_device/set:

mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"interface_mode":"norwegian_han_extra_load"}'

Watch the topics live from the browser: MQTT client.

How to pair it

  1. In Zigbee2MQTT click Permit join.
  2. Put the device in pairing mode: usually a long press of the reset button (5–10 s) until the LED blinks; bulbs: switch the power off and on 5–6 times.
  3. Keep the device close to the coordinator or a router while pairing.
  4. Give it a clear name: MQTT topics and Home Assistant entities are built from it.

Exact procedure and model notes: the device page in the Zigbee2MQTT docs. No coordinator yet: coordinator picker.

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