The electronic power supply unit provides a 24 V DC supply to systems with an operational voltage of 85 - 265 V AC or 85 - 300 V DC. The device operates in the lower class for minimum power supply with a safety extra-low voltage (SELV).

The electronic power supply unit is suitable for supplying the 5TT7 1 GSM alarm modules within a supply voltage range of 150 - 230 V AC.