Silent Knight 6808 — intelligent addressable fire alarm control panel with built-in dual-path communicator, in a red surface- or flush-mountable enclosure. It is the latest intelligent addressable FACP from Silent Knight and a direct replacement for the 5808 FACP.
The 6808 has one SLC (signaling line circuit) loop for connecting addressable detectors, supporting 99 System Sensor SK sensors and 99 SK modules — 198 addresses — or 127 Hochiki SD devices per loop. A common communications and annunciation link allows up to 17 panels to be connected via copper or fiber optic cable, with a designated panel configured as the communicator for all panels in the link for single-point communications. The built-in digital alarm communicator/transmitter is dual technology, IP and POTS: the POTS path transmits system status to a central station over the public switched telephone network, while the IP communicator sends alarm signals over the internet, saving the monthly cost of two dedicated business telephone lines. Optional cellular reporting is available.
Four onboard output circuits can be configured as notification outputs or as auxiliary power in four types — door holder, constant, resettable and sounder sync power. The panel also provides a form-C trouble relay and two programmable form-C relays, plus drift compensation, pre-trouble maintenance alert, a built-in sensor test to comply with NFPA 72 calibration testing requirements, and a calibration trouble alert. JumpStart auto programming, a built-in USB interface and the Windows-based Honeywell Fire Software Suite (HFSS) simplify commissioning, and firmware is field-upgradeable. SWIFT wireless support allows up to four wireless gateways, each fostering up to 49 wireless devices.
Specifications
| Intelligent signaling line circuits |
1 |
| Addressable device capacity |
198 (SK) or 127 (SD) |
| Programmable software zones |
250 (plus 250 output groups) |
| Output circuits |
4 (expandable) |
| SBUS devices |
20 (12 annunciators, 8 LED modules) |
| AC power |
120 VAC, 60 Hz, 3.3 A |
| Standby current |
190 mA |
| Alarm current |
250 mA |
| Output circuits detail |
Four Class B or two Class A NACs or auxiliary power; power-limited, supervised. Max. 3 A per circuit, not to exceed 6 A total for all circuits. EOL resistor 4.7k ohm, ½ watt for Class B NACs |
| Communication loop |
Supervised and power-limited, Class A or Class B, 32 VDC, 150 mA |
| Relays |
Two programmable and one fixed trouble relay; 2.5 A @ 27.4 VDC (resistive), Form C |
| Battery |
Cabinet holds maximum of two 18 AH batteries |
| Battery charger capacity |
17–55 AH |
| Dimensions |
16.4″ W × 26.4″ H × 4.1″ D (41.66 × 67.06 × 10.41 cm) |
| Weight |
45 lbs. (20.4 kg) |
| Color |
Red |
| Display |
Four line LCD, 20 characters per line |
| History file |
1,000 event capacity |
| Temperature / humidity |
Meets NFPA requirements for 32–120°F (0–49°C) and 93% ±2% RH non-condensing at 90°F ±3°F |
| Standard |
Complies with UL 864 10th Edition |
| UL Listed |
S2766 |
| CSFM |
7165-0559:0502 |
| FDNY |
COA# 2023-TMCOAP-001168-RENL |
| FM |
Approved |
| Seismic |
(CA) VMA-45894-05C |
| Country of origin |
USA |
Installation notes
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SK and SD devices cannot be mixed in the same system. Choose one protocol family and refer to the Device Compatibility Document and SLC Wiring Manual.
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Output circuit budget: each of the four circuits is rated 3 A maximum, but the total across all circuits cannot exceed 6 A — size notification loads against the 6 A ceiling, not 4 × 3 A.
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NAC end-of-line: Class B NACs require a 4.7k ohm, ½ watt end-of-line resistor.
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Strobe synchronization is selectable for Amseco, System Sensor, Wheelock and Gentex devices.
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SWIFT wireless is only compatible with System Sensor (SK) devices — it is not compatible with Hochiki (SD) devices.
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Battery sizing: the cabinet physically holds a maximum of two 18 AH batteries; larger capacities up to the 55 AH charger limit require the RBB remote battery box accessory cabinet.
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Environment: although rated to NFPA limits, installation in a normal room temperature of 60–80°F (15–27°C) is recommended, since extreme temperature and humidity shorten standby battery and component life.
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Panel linking: connectivity for up to 17 sites requires the SK-NIC network interface card; fiber runs use SK-FML (multi-mode) or SK-FSL (single-mode).
Replacement
The Silent Knight 6808 is a direct replacement for the 5808 FACP. It keeps the single SLC loop of 99 SK detectors and 99 SK modules (198 addresses) and adds a built-in dual-path IP and POTS communicator.
Related models and accessories
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5808 — the previous-generation FACP that the 6808 directly replaces.
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6860 / 6855 / 5860 / 5860R — LCD remote fire annunciators (6860 is 4x40 with four programmable buttons, red).
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5895XL — 6 A power supply with six Flexput circuits and two Form C relays; 5496 — 6 A NAC power expander with four power-limited outputs.
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WSK-WGI — SWIFT wireless gateway; up to four supported, 49 wireless devices each.
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HWF2A-COM / HWF2V-COM / IPGSM-4G — optional cellular and dual-path fire alarm communicators.
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SK-SCK — seismic compliance kit; RBB — remote battery box accessory cabinet.
Specifications taken from the Silent Knight (Honeywell) data sheet “6808 Intelligent Fire Alarm Control Panel with Communicator,” document 351608, Rev. D (5/22/2023). Manufacturer specifications are subject to change without notice.
