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SK-FFT Installation and Operation Manual
2.4
Electrical Specifications
2.4.1
Power Requirements
Voltage for the SK-FFT must be a power-limited, filtered, non resettable nominal 24
VDC source. The voltage source must be within the range of 17-29 VDC.
SLC Circuits
Audio Circuits
2.4.2
Current Ratings
Maximum current ratings for determining backup battery requirements for alarm
(active) and standby conditions over the input voltage range of 17-29 VDC are shown
in Table 2-2.
SK-FFT
FFT-24
2-4
Table 2-1: Electrical Ratings
Circuits
Voltage
32 V
17 V
Table 2-2: SK-FFT Current Draw
Current
150 mA
53 mA
Active
Standby
230 mA
120 mA
25 mA
10 mA
54711
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