Silent Knight 006808U (6808U) is an Ultra Series intelligent addressable fire alarm control panel with a built-in communicator. Silent Knight presents it as a direct replacement for the 6808 and 5808 panels. It has one SLC loop for up to 159 SK detectors and 159 SK modules or 127 SD devices, eight Flexput circuits, and a built-in dual-line DACT with IP and optional cellular reporting.
Specifications
| Points |
318 (one SLC: 159 SK detectors and 159 SK modules, or 127 SD devices) |
| Flexput circuits |
Eight, 3.0 A max. each for NAC or auxiliary power, 100 mA for initiating circuits; 6.0 A total output power |
| Panel power |
6 A standby / 9 A alarm |
| Communicator |
Built-in dual phone line DACT, IP, optional cellular |
| Relays |
Two programmable Form C relays and one Form C trouble relay, 2.5 A at 24 VDC resistive |
| SLC |
32 VDC, 150 mA |
| SBUS |
Up to 20 SBUS devices |
| Display |
Four-line LCD, 20 characters per line |
| Software |
999 software zones, 999 output groups, 1,000-event history, JumpStart auto programming |
| Networking |
Up to 17 panels/sites |
| Wireless |
Up to four SWIFT gateways |
| Battery |
Cabinet holds up to 18 Ah batteries |
| Cabinet color |
Red |
| Mounting |
Surface or flush |
| Environment |
Indoor dry, 32 to 120 °F (0 to 49 °C), humidity up to 93% non-condensing |
| Listings |
UL 864 10th Edition, UL 2017 |
Compatibility and installation notes
- Selectable strobe synchronization for Amseco, System Sensor, Wheelock and Gentex devices.
- Additional points can be added with SLC expanders (6815 for SK protocol, 5815XL for SD protocol).
- Supports up to 16 remote annunciators (6860, 5860 or 6855) and 5865-3, 5865-4 and 5880 LED annunciators.
- Can be linked with 6700, 6808, 6808U, 6820, 6820U, 6820EVS and 6820UEVS panels, up to 17 panels.
- Shipment includes the main board with display, backbox with door, keys, hardware and ten 4.7K EOL resistors.
Related models
Documents
Specifications from Silent Knight manual LS10419-000SK-E Rev. A, 09/16/2025, and the Honeywell 6808U Ultra Series product page. Manufacturer specifications are subject to change.
