Bogen s PRSLSI functions as both a loop start interface for small paging systems and as a 24V DC power supply. The PRSLSI includes Tip and Ring terminals for connection to a loop start trunk to provide paging access and enough audio capacity to drive up to 25 self-amplified speaker inputs. The PRSLSI also supplies 9 CU (450 mA) of regulated 24V DC power for external equipment like self-amplified speakers. PRSLSI 24V Talk battery supply for loop start ports Buffered audio output for up to 25 self-amplified speakers 9 CU (24V DC, 450 mA) power supply for external equipment Six-terminal barrier strip Integral flanges and rubber feet for wall or shelf mounting UL and C-UL listed 120V AC, 60 Hz 24V DC @ 450 mA Regulated Wall Mount w/ Integral Flanges Screw Terminal, Barrier Strip 3 lb. UL and C-UL listed