2-9
4. Installing a Back Up Battery
Selecting Battery
A Battery Backup is available for providing for operation of the DX-408/DX-408i digital key
system during a power outage (ordering code DCSBBU, 7 AH, 48 Volts, providing
approximately 4 hours’ back up time). The recommended capacity of a backup battery for the
DX-408/DX-408i digital key system is DC 48V (6AH~40AH). An excessively large Amp
Hour capacity of a battery may cause a breakdown of the DX-408/DX-408i digital key system.
An insufficient battery capacity may provide for insufficient back up operation duration.
Battery Specification
Items
Charge
Discharge
Minimum load current (A)
0
0.04
Maximum load current (A)
0.3
0.4
Rated output current (A)
0.1
0.2
Rated output voltage (V)
54
48
Current consumption of general telephone:30mA
Содержание DX-408
Страница 1: ......
Страница 2: ......
Страница 7: ......
Страница 8: ......
Страница 15: ......
Страница 16: ......
Страница 44: ...2 28 Chapter 2 DX 408 DX 408i Digital Key System Installation ...
Страница 55: ...3 11 Door Phone Interface Module Connections ...
Страница 56: ......