Schneider Electric MEG5126-0300/MEG5172-0000 with Zigbee2MQTT…

What it exposes

Feature	Property	Values	Control
Ballast minimum level	ballast_minimum_level	1…254	settable
Ballast maximum level	ballast_maximum_level	1…254	settable
Dimmer mode	dimmer_mode	auto, rc, rl, rl_led	settable
Light (left)	state, brightness	on / off, brightness	settable
Light (right)	state, brightness	on / off, brightness	settable
Light effect (left)	effect_left	blink, breathe, okay, channel_change, finish_effect, stop_effect	settable
Light effect (right)	effect_right	blink, breathe, okay, channel_change, finish_effect, stop_effect	settable
After power loss (left)	power_on_behavior_left	off, on, toggle, previous	settable
After power loss (right)	power_on_behavior_right	off, on, toggle, previous	settable
Switch actions (left_btn)	switch_actions_left_btn	light, light_opposite, dimmer, dimmer_opposite, standard_shutter, standard_shutter_opposite, schneider_shutter, schneider_shutter_opposite …	settable
Switch actions (right_btn)	switch_actions_right_btn	light, light_opposite, dimmer, dimmer_opposite, standard_shutter, standard_shutter_opposite, schneider_shutter, schneider_shutter_opposite …	settable
Indicator mode (left_btn)	indicator_mode_left_btn	reverse_with_load, consistent_with_load, always_off, always_on, flash_on_click	settable

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:

{
  "ballast_minimum_level": 128,
  "ballast_maximum_level": 128,
  "dimmer_mode": "auto",
  "state_left": "ON",
  "brightness_left": 180,
  "state_right": "ON",
  "brightness_right": 180,
  "power_on_behavior_left": "off",
  "power_on_behavior_right": "off",
  "switch_actions_left_btn": "light",
  "switch_actions_right_btn": "light",
  "indicator_mode_left_btn": "reverse_with_load",
  "linkquality": 120
}

Send commands to zigbee2mqtt/my_device/set:

mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"state_left":"ON","brightness_left":180}'
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"state_left":"OFF","transition":2}'
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"state_right":"ON","brightness_right":180}'
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"state_right":"OFF","transition":2}'
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"dimmer_mode":"rc"}'

Watch the topics live from the browser: MQTT client.

Home Assistant automation example

Zigbee2MQTT creates Home Assistant entities from the device name. If it is called my_device, an automation in automations.yaml can look like this:

- alias: "Light at sunset"
  mode: single
  triggers:
    - trigger: sun
      event: sunset
      offset: "-00:15:00"
  actions:
    - action: light.turn_on
      target:
        entity_id: light.my_device
      data:
        brightness_pct: 70

Check the YAML: YAML checker.

How to pair it

In Zigbee2MQTT click Permit join.
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.
Keep the device close to the coordinator or a router while pairing.
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.

Schneider Electric MEG5126-0300/MEG5172-0000

What it exposes

MQTT: state and commands

Home Assistant automation example

How to pair it

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More tools: smart home