• 508 Point Addressable Fire Alarm Control Panel

The SILENT-KNIGHT-5820XL is an intelligent addressable fire alarm control panel which offers built-in digital communication, distributed intelligent power, a modular design and an expanded, easy to use interface.

The 5820XL also features a powerful built-in dual line fire communicator thatallows for reporting of all system activity to a remote monitoring location.


  • Built-in support for up to 99 SK detectors and 99 SK modules, expandable to 396 SK detectors and 396 SK modules creating a total point capacity of 792 points using the SK protocol (version 10.0 and higher)
  • Built-in support for up to any combination of 127 SD devices, expandable to 508 devices using the SD protocol
  • Built-in digital communicator/dialer
  • Uses standard wire - no shielded or twisted pair required
  • Six Flexput circuits configurable as three Class A (Style Z) or six Class B (Style Y), auxiliary for resettable, constant, or door holder power. Can also be configured as input point to monitor conventional devices
  • Point status meets calibrated smoke test requirements for NFPA 72
  • One Form C trouble relay and two Form C programmable relays
  • Built-in synchronization for multiple notification appliance manufactures
  • RS-485 SBUS provides communication to intelligent distributed system accessories

Technical Specifications:

  • Primary AC: 120 VRMS at 50/60 Hz, 2.5A or 240 VRMS at 50/60 Hz, 1.4A
  • Total Accessory Load: 6A @ 27.4 VDC, power-limited
  • Standby Current: 215 mA
  • Alarm Current: 385 mA
  • Flush Mount Dimensions: 14.5"W x 24.75"H x 3.9"D (36.8 W x 62.9 H x 9.8 D cm )
  • Overall Dimensions: 16.2"W x 26.4"H x 4.2"D (40.6 W x 67 H x 11.8 D cm)
  • Weight: 28 lbs. (12.8 kg)
  • Color: Red
  • Battery Charging Capacity: 7.0-35 AH
  • Battery Size: 18 AH max allowed in control panel cabinet

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508 Point Addressable Fire Alarm Control Panel

  • Product Code: SILENT KNIGHT:005820XL

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