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AC-425 Hardware Installation and User Guide
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Figure 5: Door Lock – Failed Open
3.4
Power Supply
The following diagram illustrates wiring between the PS-33 power supply and the AC-425.
It is recommended to add a 12 VDC lead acid backup battery if the main power supply fails.
If the main output is 12 VDC, wire it to the PS-33, whose load ratings are 1.5 A/0.9 A/0.3
A; otherwise, you should support your power supply according to the output requirements.
For more information, refer to Section 4.3. A 12-V 7 AH battery provides 3 hours of
backup operation.
