The Silent Knight SD500-LIM SLC Loop Isolation Module is a critical component designed to enhance the reliability and fault tolerance of addressable fire alarm communication systems. This intelligent module provides essential electrical isolation between fire alarm circuit segments, preventing single-point failures from compromising entire detection zones in large commercial and institutional installations.
Engineered for complex fire alarm network topologies, the SD500-LIM ensures continuous system communication by automatically isolating short circuit faults to minimize system downtime. When a short circuit occurs on one segment of the Signaling Line Circuit (SLC), the module disconnects that problematic section while maintaining operational integrity for the remaining alarm zones.
Ideal for high-rise office buildings, healthcare facilities, educational campuses, and mission-critical infrastructure, the SD500-LIM integrates seamlessly with Silent Knight addressable fire alarm control panels and provides robust protection against potential communication disruptions.
Key Features
- Automatic electrical isolation for addressable SLC circuits
- Compatible with Silent Knight addressable fire alarm panels
- Meets NFPA 72 National Fire Alarm and Signaling Code requirements
- Supports continuous system monitoring and fault detection
- Compact design for easy panel and junction box installation
- UL Listed for comprehensive fire alarm system reliability
Specifications
- Operating Voltage: 24VDC nominal
- Current Consumption: Less than 1mA in standby
- Operating Temperature Range: 32°F to 120°F (0°C to 49°C)
- Humidity Tolerance: 10% to 93% non-condensing
- Dimensions: Approximately 5″ x 3″ x 1.5″
Certified to UL 268 and UL 464 standards, the Silent Knight SD500-LIM provides fire alarm professionals with a reliable solution for maintaining comprehensive life safety system performance in complex commercial environments.
For more information, contact the Life Safety Consultants team at (888) 557-0558, or email us at: sales@lifesafetycom.com
Additional information
| Weight | 0.5 lbs |
|---|---|
| Dimensions | 0.5 × 8 × 6 in |
| Condition | New |
| Manufacturers | Silent Knight |
| Part Type | Module |







