By using the intelligent power supply units PSUs (Power Supply Unit), the following supply variants are possible:
- Direct operation on a PV panel for autonomous operation
- Use of primary batteries with a service life of several years
- Supply on 12V or 24V on-board networks
- Operation on supply networks that only carry electricity temporarily such as street lamps
- Supply to mains voltage with power failure message
The PSUs have a unique serial number, an identifier of the PSU type and a charge quantity counter that is retained even when the PSU unit is exchanged for another unit.