Xiaomi SSM-U02
| Model | SSM-U02 | 
| Vendor | Xiaomi | 
| Description | Aqara single switch module T1 (without neutral). Doesn’t work as a router and doesn’t support power meter | 
| Exposes | switch (state), power_outage_memory, switch_type, power_outage_count, device_temperature, linkquality | 
| Picture | ![]()  | 
    
Options
How to use device type specific configuration
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state_action: State actions will also be published as ‘action’ when true (default false). The value must betrueorfalse - 
    
device_temperature_calibration: Calibrates the device_temperature value (absolute offset), takes into effect on next report of device. The value must be a number. 
Exposes
Switch
The current state of this switch is in the published state under the state property (value is ON or OFF).
To control this switch publish a message to topic zigbee2mqtt/FRIENDLY_NAME/set with payload {"state": "ON"}, {"state": "OFF"} or {"state": "TOGGLE"}.
To read the current state of this switch publish a message to topic zigbee2mqtt/FRIENDLY_NAME/get with payload {"state": ""}.
Power_outage_memory (binary)
Enable/disable the power outage memory, this recovers the on/off mode after power failure.
Value can be found in the published state on the power_outage_memory property.
To read (/get) the value publish a message to topic zigbee2mqtt/FRIENDLY_NAME/get with payload {"power_outage_memory": ""}.
To write (/set) a value publish a message to topic zigbee2mqtt/FRIENDLY_NAME/set with payload {"power_outage_memory": NEW_VALUE}.
If value equals true power_outage_memory is ON, if false OFF.
Switch_type (enum)
Wall switch type.
Value can be found in the published state on the switch_type property.
To read (/get) the value publish a message to topic zigbee2mqtt/FRIENDLY_NAME/get with payload {"switch_type": ""}.
To write (/set) a value publish a message to topic zigbee2mqtt/FRIENDLY_NAME/set with payload {"switch_type": NEW_VALUE}.
The possible values are: toggle, momentary.
Power_outage_count (numeric)
Number of power outages (since last pairing).
Value can be found in the published state on the power_outage_count property.
It’s not possible to read (/get) or write (/set) this value.
Device_temperature (numeric)
Temperature of the device.
Value can be found in the published state on the device_temperature property.
It’s not possible to read (/get) or write (/set) this value.
The unit of this value is °C.
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.
