Description
The Silent Knight SK-5217 is a 10-zone expander module designed to extend the capacity of the SK-5208 fire alarm control panel. It adds ten additional Class B (Style B) zone inputs and communicates via a 4-wire SBUS connection, allowing installation either within the control panel cabinet or remotely up to 1,500 feet away.
Technical Specifications
| Condition |
New/Never Used Surplus |
| Brand |
Silent Knight |
| Category |
Fire Alarm Equipment |
| Part Number |
SK-5217 |
| Subcategory |
Expansion Module |
| Type |
10-zone input expansion module |
| Compatible Panel |
Silent Knight SK-5208 Fire Alarm Control Panel |
| Number of Additional Zones |
10 Class B (Style B) zones |
| Maximum Expanders per Panel |
2 (for a total of 30 zones) |
| Communication Interface |
4-wire SBUS connection |
| Remote Mounting Distance |
Up to 1,500 ft. from the main control panel |
| Mounting Options |
Installs inside SK-5208 cabinet or SK-2190 accessory cabinet |
| Power Source |
Provided via SBUS connection from control panel |
| Circuit Supervision |
Fully supervised input zones |
| Installation |
Plug-in or remote cabinet mountable |
| Material |
High-reliability PCB assembly |
| Operating Voltage |
24VDC nominal (from SBUS) |
| Indicators |
LED status indication for communication and supervision |
| Dimensions |
6 × 8 × 1 in |
| Weight |
5 lbs |
| Certifications |
UL Listed, NFPA 72 compliant |
| Applications |
Fire alarm system expansion for additional initiating device zones |
Information About SK-5217
The SK-5217 expander module is designed to increase the detection zone capacity of the Silent Knight SK-5208 conventional fire alarm control panel. By adding ten additional Class B input circuits per module, installers can expand a system to accommodate more initiating devices such as pull stations, smoke detectors, and heat sensors. Up to two SK-5217 modules can be used per control panel, providing a total of thirty zones for larger installations. The module connects easily via the SBUS communication loop using a simple 4-wire connection, ensuring fast setup and reliable operation. It can be mounted either within the main control cabinet or remotely in the SK-2190 accessory cabinet up to 1,500 feet away, offering flexibility for various building layouts.
Key Features
- 10 Additional Zone Inputs: Expands the SK-5208 system to support more detection and alarm devices.
- Flexible Installation: Mounts inside the main SK-5208 cabinet or remotely in an SK-2190 accessory cabinet.
- SBUS Communication: Utilizes a 4-wire connection for data and power transfer with reliable supervision.
- Long-Distance Mounting: Can be located up to 1,500 feet from the control panel for distributed installations.
- Scalable Expansion: Supports up to two modules per panel, increasing system capacity to 30 total zones.
- Easy Integration: Plug-and-play connection reduces setup time and wiring complexity.
- Supervised Inputs: Ensures all circuits are monitored for open, short, and alarm conditions.
- UL and NFPA Certified: Meets all industry standards for fire alarm system reliability and performance.
The SK-5217 delivers the reliability and precision required for scalable fire alarm systems, providing flexible zone expansion and secure SBUS communication for extended installations.
