Altronix AL125ULP 2 PTC Outputs Power Supply / Charger. 12VDC or 24VDC, Class 2, Grey Enclosure & Plug-in Xfmr. AL125ULP is a Two (2) Output Switching Power Supply/Charger that converts a 24VAC @ 40VA input, into two (2) individually PTC protected 12VDC or 24VDC outputs. Access control trigger input. Built-in charger for sealed lead acid or gel type batteries. Automatic switch over to stand-by battery when AC fails.Maximum charge current 0.4 amp. AC fail supervision (form "C" contacts).Supervised Fire Alarm Disconnect (Latching w/reset or Non-Latching) Includes power supply, plug-in transformer, enclosure and battery leads.