Digital Monitoring Products, Inc | 9000 Series Installation and Programming Guide 10
3
Power the Keypad
Primary DC Power Supply
Locate the keypad near a wall outlet to allow connection of the Model 371-500
plug-in DC power supply. See Figure 4 for a diagram of the DC power supply
connector. In addition to powering the keypad, the power supply also charges the
internal back-up battery. The plug-in power supply includes a six foot cord. The cord
can be lengthened but should be located within 100feet of the keypad using 22AWG
wire.
Caution: Observe polarity when extending
the power supply cord.
When the power supply connector is plugged
into the keypad, the internal battery is
automatically connected. The keypad can
operate from battery only as long as the power
supply connector is plugged into the keypad.
Standby Battery
The keypad rechargeable battery provides 24hours of backup battery power when
primary DC power is unavailable. It is shipped already installed inside the keypad. The
battery is intended for backup power only and not to operate the keypad on a daily
basis. If the battery is low, or not plugged into the internal battery connector, a low
battery condition is indicated by the panel when the battery falls below 3.62VDC. To
restore the keypad from a low battery state, the voltage must be above 3.62 VDC.
Black (-)
Black/White
Figure 4: DC Power Supply Connector
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