ALTRONIX AL100UL Power Supply/Battery Charger 12VDC @ 750mA Altronix AL100UL Single Output Power Supply/Charger (12VDC @ 750mA, 16.5VAC, BC100 Enclosure) Input: 16.5VAC, 20VA from UL Listed, Class 2 transformer (sold separately). Output: 12VDC output. 750mA supply current. Class 2 Rated power limited output. Filtered and electronically regulated output. Short circuit and thermal overload protection. Battery Backup: Built-in charger for sealed lead acid or gel type batteries. (batteries sold separately) Automatic switch over to stand-by battery when AC fails. Maximum charge current 0.5 amp. Low battery disconnect prevents batteries from deep discharge. Supervision: AC fail supervision (form "C" contacts). Low battery supervision (form "C" contacts). Visual Indicators: AC input and DC output LED indicators. Electrical: Operating temperature: 0 C to 49 C ambient. 4.6 BTU/Hr. System AC input VA requirement: 26.45VA. We are selling a huge amount of new alarm equipment! Please take a look at our other listings! Feel free to message me for an inventory list including other items that we haven't listed yet! *WE CAN WORK OUT A DEAL FOR BULK ORDERS* SHELF: B