What happens if the batteries are suddenly empty?
As soon as the batteries are falling below a certain voltage, the TSE 3000 Basic will send visual warnings with its luminous diode. The TSE 3003 Premium display will show a permanent battery voltage. That way, there is enough time for changing the batteries. Both systems inform you in advance about the battery status to make sure that you can always enter. And if it happens despite all, you can still buy the corresponding batteries at a petrol station even in the middle of the night.
