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Circuits
LED Indicators
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Fire Alarm Zone 1 - red LED
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Fire Alarm Zone 2 - red LED
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Fire Alarm Zone 3 - red LED (Flex 404 only)
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Fire Alarm Zone 4 - red LED (Flex 404 only)
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Supervisory Zone 1 - yellow LED
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Supervisory Zone 2 - yellow LED
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Supervisory Zone 3 - yellow LED (Flex 404 only)
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Supervisory Zone 4 - yellow LED (Flex 404 only)
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Trouble Zone 1 - yellow LED
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Trouble Zone 2 - yellow LED
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Trouble Zone 3 - yellow LED (Flex 404 only)
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Trouble Zone 4 - yellow LED (Flex 404 only)
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Maintenance Zone 1 - yellow LED
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Maintenance Zone 2 - yellow LED
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Maintenance Zone 3 - yellow LED (Flex 404 only)
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Maintenance Zone 4 - yellow LED (Flex 404 only)
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AC Power - green LED
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NAC Disable - yellow LED
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Zone Disable - yellow LED
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NAC Fault - yellow LED
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System Trouble - yellow LED
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Power Trouble - yellow LED
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Walktest - yellow LED
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Alarm Silence - yellow LED
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Earth Fault - yellow LED (on main circuit board) lights if zero impedance between FACP and
ground exists
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Battery Fault - yellow LED (on main circuit board)
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Charger Fault - yellow LED (on main circuit board)
Local Piezo Sounder
A piezo sounder provides separate and distinct sounds for alarm, trouble, maintenance and
supervisory conditions as follows:
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Alarm - on steady
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Trouble - pulse 1 second on and 1 second off
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Maintenance - pulse ½ second on and ½ second off
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Supervisory - pulse ½ second on and ½ second off
1.4 Circuits
Input Circuits
Two input IDCs (Initiating Device Circuits) on the Flex 402 and four IDCs on the Flex 404 provide
Style B (Class B) configurations. All IDCs accept i
smoke detectors, four-wire smoke detectors and normally-open contact devices.
Output Circuits
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24 VDC resettable special application power output - 500 mA
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24 VDC nonresettable special application power output (Flex 404 only) - 500 mA
Flex 402 & Flex 404 Instruction Manual — P/N 52194:D4 3/27/2015
detectors as well as conventional two-wire
3
Product Description
13
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