5820XL | Silent Knight Addressable Fire Alarm Control Panel with Digital Communicator
Silent Knight · Fire & Life Safety
Description The Silent Knight 5820XL is an intelligent addressable fire alarm control panel designed to provide reliable detection and reporting across large facilities. It supports both SK and SD protocol devices, integrates a built-in digital communicator, and features distributed intelligent power with modular expansion capabilities. Technical Specifications Condition New/Never Used Surplus Brand Silent Knight Category Fire Alarm Systems Part Number 5820XL Subcategory Fire Alarm Control Panels Primary AC 120 Vrms 50/60 Hz, 2.5A or 240 Vrms 50/60 Hz, 1.4A Operating Voltage 27.4 VDC system power Total Accessory Load 6A @ 27.4 VDC, power-limited Flexput Circuits Six programmable circuits: notification (3A @ 27.4 VDC), auxiliary (3A @ 27.4 VDC), or initiation (100 mA @ 27.4 VDC) Standby Current 215 mA Alarm Current 385 mA Notification Power 3A per circuit @ 27.4 VDC Relays One Form C trouble relay, two Form C programmable relays (2.5A @ 27.4 VDC each) Battery Charging Capacity 7.0–35 AH Battery Size in Panel Up to 18 AH (larger batteries require external cabinet) Device Support (SK Protocol) 99 detectors, 99 modules (expandable to 396 each) Device Support (SD Protocol) 127 devices (expandable to 508) Communication Interfaces Built-in digital communicator, RS-232, USB, RS-485 bus Output Cadences 13 pre-programmed including ANSI 3.41 Annunciator Display 80-character LCD with tactile keypad Mounting Options Surface or flush mount Enclosure Color Red Flush Mount Dimensions 14.5" W x 24.75" H x 3.9" D (36.8 x 62.9 x 9.8 cm) Overall Dimensions 16.2" W x 26.4" H x 4.2" D (40.6 x 67 x 11.8 cm) Weight 28 lbs (12.8 kg) Information About 5820XL The 5820XL is part of Silent Knight’s IntelliKnight® series, offering intelligent addressable fire detection with modular expandability and powerful communication features. It supports up to 396 SK detectors and 396 SK modules or 508 SD devices, giving system designers flexibility for both small and large projects. Equipped with Flexput™ circuits, the 5820XL allows each circuit to be programmed as notification, auxiliary power, or initiation, reducing installation complexity and increasing design versatility. A built-in UL-listed digital communicator provides dual-line reporting to remote monitoring centers, while integrated drift compensation, maintenance alerts, and programmable cadences enhance detection reliability and alarm management. Key Features: High Device Capacity: Supports up to 396 SK devices or 508 SD devices depending on protocol. Flexible Flexput™ Circuits: Six programmable circuits configurable as notification, auxiliary power, or initiation. Integrated Digital Communicator: Dual-line communicator supervises two phone lines with advanced reporting functions. Built-in Annunciator: 80-character LCD display with large keypad provides user-friendly operation and programming. Advanced Detection Technology: Features drift compensation, maintenance alert, and nuisance alarm reduction. Modular Expandability: Compatible with accessories such as 5860 annunciator, 5815XL SLC expander, and 5895XL power module. Programmable Outputs: Offers 13 pre-programmed cadences including ANSI 3.41 and four programmable outputs. Relay Support: Includes one Form C trouble relay and two programmable relays rated for auxiliary device control. System Synchronization: Supports synchronization with AMSECO®, Gentex®, Faraday, System Sensor®, and Wheelock® devices. The 5820XL delivers the reliability and precision required for comprehensive fire detection, large-scale system integration, and NFPA-compliant monitoring.
Brand: Silent Knight · Category: Fire & Life Safety
Key features
- High Device Capacity: Supports up to 396 SK devices or 508 SD devices depending on protocol.
- Flexible Flexput™ Circuits: Six programmable circuits configurable as notification, auxiliary power, or initiation.
- Integrated Digital Communicator: Dual-line communicator supervises two phone lines with advanced reporting functions.
- Built-in Annunciator: 80-character LCD display with large keypad provides user-friendly operation and programming.
- Advanced Detection Technology: Features drift compensation, maintenance alert, and nuisance alarm reduction.
- Modular Expandability: Compatible with accessories such as 5860 annunciator, 5815XL SLC expander, and 5895XL power module.
- Programmable Outputs: Offers 13 pre-programmed cadences including ANSI 3.41 and four programmable outputs.
- Relay Support: Includes one Form C trouble relay and two programmable relays rated for auxiliary device control.
- System Synchronization: Supports synchronization with AMSECO®, Gentex®, Faraday, System Sensor®, and Wheelock® devices.
Specifications
| Manufacturer part number | 5820XL |
|---|---|
| Condition | New/Never Used Surplus |
| Brand | Silent Knight |
| Category | Fire Alarm Systems |
| Part Number | 5820XL |
| Subcategory | Fire Alarm Control Panels |
| Primary AC | 120 Vrms 50/60 Hz, 2.5A or 240 Vrms 50/60 Hz, 1.4A |
| Operating Voltage | 27.4 VDC system power |
| Total Accessory Load | 6A @ 27.4 VDC, power-limited |
| Flexput Circuits | Six programmable circuits: notification (3A @ 27.4 VDC), auxiliary (3A @ 27.4 VDC), or initiation (100 mA @ 27.4 VDC) |
| Standby Current | 215 mA |
| Alarm Current | 385 mA |
| Notification Power | 3A per circuit @ 27.4 VDC |
| Relays | One Form C trouble relay, two Form C programmable relays (2.5A @ 27.4 VDC each) |
| Battery Charging Capacity | 7.0–35 AH |
| Battery Size in Panel | Up to 18 AH (larger batteries require external cabinet) |
| Device Support (SK Protocol) | 99 detectors, 99 modules (expandable to 396 each) |
| Device Support (SD Protocol) | 127 devices (expandable to 508) |
| Communication Interfaces | Built-in digital communicator, RS-232, USB, RS-485 bus |
| Output Cadences | 13 pre-programmed including ANSI 3.41 |
| Annunciator Display | 80-character LCD with tactile keypad |
| Mounting Options | Surface or flush mount |
| Enclosure Color | Red |
| Flush Mount Dimensions | 14.5" W x 24.75" H x 3.9" D (36.8 x 62.9 x 9.8 cm) |
| Overall Dimensions | 16.2" W x 26.4" H x 4.2" D (40.6 x 67 x 11.8 cm) |
| Weight | 28 lbs (12.8 kg) |
| Product type | Fire Alarm Control Panels |
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