Model AL125UL power supply/charger converts a 115VAC 60Hz input, to a 12VDC or 24VDC @ 1 amp of total supply current Class 2 Rated power limited output. Features - 12VDC or 24VDC selectable output. - 1 amp of total supply current output. - Two (2) Class 2 Rated power limited outputs. - 115VAC 60Hz, .6 amp input. - Filtered and electronically regulated outputs. - Normally Open (NO) trigger input. - Short circuit and thermal overload protection. - Built-in charger for sealed lead acid or gel type battery backup. - Maximum charge current .4 amp. - Automatic switch to stand-by battery when AC fails. - Supervised Fire Alarm Disconnect (Latching w/reset or Non-Latching). - AC input and DC output LED indicators. - AC power and unit status indicator on the front panel.