Data Sheet

1 Hardware pack
1 Literature pack
Technical specifications
Battery Characteristics
Load Shed Restoral: 23.1 VDC to 24.7 VDC
Load Shed Threshold: 18.9 VDC to 20.5 VDC
Low Battery Restoral: 24.2 VDC to 26.5 vDC
Low Battery Threshold: 22.0 VDC to 24.1 VDC
Environmental Considerations
Relative Humidity: 85% at +86°F (+30°C) non-condensing
Temperature (operating): +32°F to +122°F (0°C to +50°C)
Mechanical Properties
Color: Cardinal red (powder coat)
Dimensions (HxWxD): 16.25 in. x 16.25 in. x 3.5 in.
(41.3 cm x 41.3 cm x 8.9 cm)
Material: 16 gauge (1.5 mm) cold rolled steel
Outputs
Charging Current: 2.0 A maximum
Communication Header: Open-collector output current sink, 5 mA
maximum
DC Output: 18.9 VDC to 28.0 VDC
Summary Trouble Relay: Form C, rated for 2 A at 12 VDC or
24 VDC
Power Requirements
Input: 120 VAC, 60 Hz 360 VA
Output: 4.0 A
Ordering information
D9142F 24 VDC Auxiliary Power Supply
UL Listed auxiliary power supply for use in Commercial
Fire Alarm System applications. Comes with D9142M
Power Supply with Mounting Skirt (and wiring
harnesses), red enclosure, and D1601 Transformer.
Order number D9142F
D9142M Power Supply with Mounting Skirt
UL Listed auxiliary power supply for use in Commercial
Fire Alarm System applications. Comes with power
supply board, mounting skirt, LED assembly, and three
wiring harnesses.
Order number D9142M
D9142LC 24 V Power Supply (less case)
UL Listed auxiliary power supply board for use in
Commercial Fire Alarm System applications.
Order number D9142LC
Accessories
D126 Standby Battery (12 V, 7 Ah)
A rechargeable sealed lead‑acid power supply used as
a secondary power supply or in auxiliary or ancillary
functions.
Order number D126
D1224 Battery (12 V, 26‑28 Ah)
A 12 V sealed lead‑acid battery for standby and
auxiliary power with two bolt‑fastened terminals.
Includes hardware for attaching battery leads or spade
connectors.
Order number D1224
D1238 Battery (12 V, 38 Ah)
A 12 V sealed lead-acid battery for standby and
auxiliary power with two bolt‑fastened terminals.
Includes hardware for attaching battery leads or spade
connectors.
Order number D1238
3 | D9142 Auxiliary Power Supplies