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Zigbee devices Lights and bulbs

Sunricher SR-2421-Z2D8C

Zigbee to DALI controller. Works with Zigbee2MQTT with no vendor hub or cloud: it pairs with a Zigbee stick and shows up in Home Assistant.

Vendor
Sunricher
Model
SR-2421-Z2D8C
Type
Lights and bulbs
Power
mains: usually a router that extends the mesh
Firmware updates (OTA)
no

Find it in shops: AliExpress

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What it exposes

FeaturePropertyValuesControl
Light (l1)state, brightness, color_tempon / off, brightness, colour temperaturesettable
Light (l2)state, brightness, color_tempon / off, brightness, colour temperaturesettable
Light (l3)state, brightness, color_tempon / off, brightness, colour temperaturesettable
Light (l4)state, brightness, color_tempon / off, brightness, colour temperaturesettable
Light (l5)state, brightness, color_tempon / off, brightness, colour temperaturesettable
Light (l6)state, brightness, color_tempon / off, brightness, colour temperaturesettable
Light (l7)state, brightness, color_tempon / off, brightness, colour temperaturesettable
Light (l8)state, brightness, color_tempon / off, brightness, colour temperaturesettable

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:

{
  "state_l1": "ON",
  "brightness_l1": 180,
  "color_temp_l1": 370,
  "state_l2": "ON",
  "brightness_l2": 180,
  "color_temp_l2": 370,
  "state_l3": "ON",
  "brightness_l3": 180,
  "color_temp_l3": 370,
  "state_l4": "ON",
  "brightness_l4": 180,
  "color_temp_l4": 370,
  "state_l5": "ON",
  "brightness_l5": 180,
  "color_temp_l5": 370,
  "state_l6": "ON",
  "brightness_l6": 180,
  "color_temp_l6": 370,
  "state_l7": "ON",
  "brightness_l7": 180,
  "color_temp_l7": 370,
  "state_l8": "ON",
  "brightness_l8": 180,
  "color_temp_l8": 370,
  "linkquality": 120
}

Send commands to zigbee2mqtt/my_device/set:

mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"state_l1":"ON","brightness_l1":180,"color_temp_l1":370}'
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"state_l1":"OFF","transition":2}'
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"state_l2":"ON","brightness_l2":180,"color_temp_l2":370}'
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"state_l2":"OFF","transition":2}'
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"state_l3":"ON","brightness_l3":180,"color_temp_l3":370}'

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
        color_temp_kelvin: 2700

Check the YAML: YAML checker.

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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