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Develco SMSZB-120 #

Model SMSZB-120
Vendor Develco
Description Smoke detector with siren
Exposes temperature, battery, smoke, battery_low, test, max_duration, alarm, linkquality
Picture Develco SMSZB-120

Notes #

Triggering alarm #

This smoke alarm can be triggered manually by publishing to zigbee2mqtt/FRIENDLY_NAME/set with the payloads:

To start (Change duration in number of seconds to what you need):

To stop:

Device type specific configuration #

How to use device type specific configuration

OTA updates #

This device supports OTA updates, for more information see OTA updates.

Exposes #

Temperature (numeric) #

Measured temperature value. Value can be found in the published state on the temperature property. It’s not possible to read (/get) or write (/set) this value. The unit of this value is °C.

Battery (numeric) #

Remaining battery in %. Value can be found in the published state on the battery property. It’s not possible to read (/get) or write (/set) this value. The minimal value is 0 and the maximum value is 100. The unit of this value is %.

Smoke (binary) #

Indicates whether the device detected smoke. Value can be found in the published state on the smoke property. It’s not possible to read (/get) or write (/set) this value. If value equals true smoke is ON, if false OFF.

Battery_low (binary) #

Indicates if the battery of this device is almost empty. Value can be found in the published state on the battery_low property. It’s not possible to read (/get) or write (/set) this value. If value equals true battery_low is ON, if false OFF.

Test (binary) #

Indicates whether the device is being tested. Value can be found in the published state on the test property. It’s not possible to read (/get) or write (/set) this value. If value equals true test is ON, if false OFF.

Max_duration (numeric) #

Duration of Siren. Value can be found in the published state on the max_duration property. To read (/get) the value publish a message to topic zigbee2mqtt/FRIENDLY_NAME/get with payload {"max_duration": ""}. To write (/set) a value publish a message to topic zigbee2mqtt/FRIENDLY_NAME/set with payload {"max_duration": NEW_VALUE}. The minimal value is 0 and the maximum value is 600. The unit of this value is s.

Alarm (binary) #

Manual Start of Siren. Value will not be published in the state. It’s not possible to read (/get) this value. To write (/set) a value publish a message to topic zigbee2mqtt/FRIENDLY_NAME/set with payload {"alarm": NEW_VALUE}. If value equals START alarm is ON, if OFF OFF.

Linkquality (numeric) #

Link quality (signal strength). Value can be found in the published state on the linkquality property. It’s not possible to read (/get) or write (/set) this value. The minimal value is 0 and the maximum value is 255. The unit of this value is lqi.

Manual Home Assistant configuration #

Although Home Assistant integration through MQTT discovery is preferred, manual integration is possible with the following configuration:

sensor:
  - platform: "mqtt"
    state_topic: "zigbee2mqtt/<FRIENDLY_NAME>"
    availability_topic: "zigbee2mqtt/bridge/state"
    value_template: "{{ value_json.temperature }}"
    unit_of_measurement: "°C"
    device_class: "temperature"
    state_class: "measurement"

sensor:
  - platform: "mqtt"
    state_topic: "zigbee2mqtt/<FRIENDLY_NAME>"
    availability_topic: "zigbee2mqtt/bridge/state"
    value_template: "{{ value_json.battery }}"
    unit_of_measurement: "%"
    device_class: "battery"
    state_class: "measurement"

binary_sensor:
  - platform: "mqtt"
    state_topic: "zigbee2mqtt/<FRIENDLY_NAME>"
    availability_topic: "zigbee2mqtt/bridge/state"
    value_template: "{{ value_json.smoke }}"
    payload_on: true
    payload_off: false
    device_class: "smoke"

binary_sensor:
  - platform: "mqtt"
    state_topic: "zigbee2mqtt/<FRIENDLY_NAME>"
    availability_topic: "zigbee2mqtt/bridge/state"
    value_template: "{{ value_json.battery_low }}"
    payload_on: true
    payload_off: false
    device_class: "battery"

binary_sensor:
  - platform: "mqtt"
    state_topic: "zigbee2mqtt/<FRIENDLY_NAME>"
    availability_topic: "zigbee2mqtt/bridge/state"
    value_template: "{{ value_json.test }}"
    payload_on: true
    payload_off: false

sensor:
  - platform: "mqtt"
    state_topic: "zigbee2mqtt/<FRIENDLY_NAME>"
    availability_topic: "zigbee2mqtt/bridge/state"
    value_template: "{{ value_json.max_duration }}"
    unit_of_measurement: "s"

switch:
  - platform: "mqtt"
    state_topic: "zigbee2mqtt/<FRIENDLY_NAME>"
    availability_topic: "zigbee2mqtt/bridge/state"
    value_template: "{{ value_json.alarm }}"
    payload_on: "START"
    payload_off: "OFF"
    command_topic: "zigbee2mqtt/<FRIENDLY_NAME>/set"
    command_topic_postfix: "alarm"

sensor:
  - platform: "mqtt"
    state_topic: "zigbee2mqtt/<FRIENDLY_NAME>"
    availability_topic: "zigbee2mqtt/bridge/state"
    value_template: "{{ value_json.linkquality }}"
    unit_of_measurement: "lqi"
    enabled_by_default: false
    icon: "mdi:signal"
    state_class: "measurement"

sensor:
  - platform: "mqtt"
    state_topic: "zigbee2mqtt/<FRIENDLY_NAME>"
    availability_topic: "zigbee2mqtt/bridge/state"
    icon: "mdi:update"
    value_template: "{{ value_json['update']['state'] }}"
    enabled_by_default: false

binary_sensor:
  - platform: "mqtt"
    state_topic: "zigbee2mqtt/<FRIENDLY_NAME>"
    availability_topic: "zigbee2mqtt/bridge/state"
    payload_on: true
    payload_off: false
    value_template: "{{ value_json.update_available}}"
    enabled_by_default: false