over the intern Sensor in the charger. A extern temperature sensor is only need,
when your battery and the charge controller on different temperature zones stand with a temperature different from >4°.
The extern sensor can the really temperature from your battery control.
Over the temperature compensation will be the load voltage with a factor from 4 mV / K / battery cell regulate.
When the connection from the sensor to the charge controller is broken, the charge controller automatic take the intern sensor.
By shortcut from the cable the charger give on a charger mistake E04.
The sensor cable connection can not drawn connect.