Specifications

Alto 818 Installation and Operation
4-4 P/N 66109074001 Rev. D
4.2 DC POWER
A DC power source is required for S-Net devices. One or more supplies may be required
depending on the type and number of devices used in the system. A discussion of power
requirements for WSE products and how to estimate system power needs can be found in
Section 3.
4.2.1 ALARM-SAF MODEL AS/PS5-BFS-24-UL
The optional 12VDC, 6.5-amp, sealed 16 AH, lead-acid batteries (WSE part number 42100189001)
are available and can be housed within the Alarm-Saf cabinet. The Alarm-Saf power supply is
capable of operating with batteries up to 38 AH but batteries above 16 AH must be housed in
a separate enclosure.
The Alarm-Saf has two fuses, one for AC input, the other for the battery charging circuit . Both
fuses are 10-amp, type AGC-10.
Figure 4-2: Single Alarm-Saf Power Supply Installation