Thank you for your question.
AIN1 input is analog input. Input range: 0-30 V DC.
There you can supply voltage in the range of 0-30 V DC it does not support 1-Wire sensors.
FMB920 has no 1- Wire inputs.
You can measure the temperature using a wireless sensor, e.g. BLUE COIN T- https://teltonika-gps.com/product/blue-coin-t/
Here you can find additional informations
You can using other devices also which support 1- Wire -
For example FMB120 or FMB202