Bosch B520 Auxiliary power supply module 2A 12V F.01U.172.941

Provides up to 2 A of 12 V standby current for Fire or Burglar Applications (4 A of Burglary alarm current) Supervises up to two 12 V 7-18 Ah batteries independently for up to 36 Ah of capacity Provides up to 80 hours of standby time Easy-to-read switch addressing Uses the Bosch standard TR1850 plug-in transformer Dimensions (H x W x D) (mm) 114.30 x 176.20 x 29 mm Input voltage (VAC) 18 VAC Operating temperature (°C) 0 – 49 °C Output current (A) 2 – 4 A