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<br />~ SILENT <br />KNIGHT <br /> <br /> <br />ll!> <br /> <br />SK-2224 Battery Calculation Worksheet <br />(all currents stated in mAl <br />12106/2001 <br /> <br />Instructions: fill in shaded data fields <br /> <br />Device <br /> <br />Description <br /> <br /> <br />Total Device <br />Alarm mA <br /> <br />SK-2224 Fire Alarm Control Panel 1 50 250 50 250 <br />SK-2884 Serial Driver Board :s-.... :s- ..(1, " 10 10 0 0 <br />SK-2B65 LED Annunciator ~ " 35 75 0 0 <br />SK-2BBO Input/Output Module ~,; ::~ ;;0 " 35 660 0 0 <br />SK-2104 Digital Alarm Communicator Transmitter I.'.",....'; ~; ,; 33 70 0 0 <br />Total SK-2224 System Current 50 250 <br /> <br /> <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br /> <br /> <br />Summarv Section <br />Standby Hrs. Required 0L~ <br /> ,,,,""t',, <br />Alarm Sounding Minutes , ,,;~;' ;'.n <br />Total System Standby mA 50,475 <br />Total System Alarm mA 250,969 <br />Total System Standby A1H 1.21 <br />Total System Alarm A1H 0.02 <br />Min. A1H Battery Required 1.23 <br />Recommended A1H Battery ** r 1,48 I <br /> <br />4AH <br /> <br />0.475 <br />o <br />o <br />o <br />o <br />o <br />o <br />0.475 <br /> <br />0,969 <br />o <br />o <br />o <br />o <br />o <br />o <br />0,969 <br /> <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br /> <br />o <br />o <br />o <br />o <br />o <br />o <br />o <br />o <br /> <br />. If you are using door holders, you do not need to consider door holder current for alarm current or loss of AC, because power is removed during that time. <br /> <br /> <br />However, during normal operation, door holders draw current and must be included in the total standby current that can be drawn from the panel. <br /> <br />.. Use next size battery with capacity greater than required. <br />