Sercomm SZ-ESW01-AU
| Model | SZ-ESW01-AU |
| Vendor | Sercomm |
| Description | Telstra smart plug |
| Exposes | switch (state), power, energy, current, voltage, linkquality |
| Picture | ![]() |
Notes
Pairing
With the device unplugged (or socket switched off), press and hold the pairing button for ~4 seconds. Continue holding the pairing button while plugging in the device (or switching the socket on) and continue to hold for 2 seconds. If pairing is successful the red LED will switch off for ~2 seconds, then flash.
Options
state_action: State actions will also be published as 'action' when true (default false). The value must betrueorfalsepower_precision: Number of digits after decimal point for power, takes into effect on next report of device. The value must be a number with a minimum value of0and with a with a maximum value of3power_calibration: Calibrates the power value (percentual offset), takes into effect on next report of device. The value must be a number.energy_precision: Number of digits after decimal point for energy, takes into effect on next report of device. The value must be a number with a minimum value of0and with a with a maximum value of3energy_calibration: Calibrates the energy value (percentual offset), takes into effect on next report of device. The value must be a number.current_calibration: Calibrates the current value (percentual offset), takes into effect on next report of device. The value must be a number.current_precision: Number of digits after decimal point for current, takes into effect on next report of device. The value must be a number with a minimum value of0and with a with a maximum value of3voltage_calibration: Calibrates the voltage value (percentual offset), takes into effect on next report of device. The value must be a number.voltage_precision: Number of digits after decimal point for voltage, takes into effect on next report of device. The value must be a number with a minimum value of0and with a with a maximum value of3
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 (numeric)
Instantaneous measured power. Value can be found in the published state on the power property. It's not possible to read (/get) or write (/set) this value. The unit of this value is W.
Energy (numeric)
Sum of consumed energy. Value can be found in the published state on the energy property. It's not possible to read (/get) or write (/set) this value. The unit of this value is kWh.
Current (numeric)
Instantaneous measured electrical current. Value can be found in the published state on the current property. It's not possible to read (/get) or write (/set) this value. The unit of this value is A.
Voltage (numeric)
Measured electrical potential value. Value can be found in the published state on the voltage property. It's not possible to read (/get) or write (/set) this value. The unit of this value is V.
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.

