

Silent Knight SD500-MIM Mini Addressable Input Module – SLC Loop, Fault Supervision, UL Listed
£134.24
The Silent Knight SD500-MIM is a compact, addressable Class B input module for IntelliKnight panels. It supervises a dry-contact initiating device circuit up to 2,500 ft and reports faults or alarms via SLC loop.
- Description
- Additional information
- Technical Specification
Description
The Silent Knight SD500-MIM Mini Input Module provides reliable, supervised monitoring of a single dry-contact initiating device circuit (IDC) in intelligent two-wire fire alarm systems. Engineered for tight spaces, the SD500-MIM fits within a standard single-gang box, making it ideal for retrofit or new-construction applications using pull stations, waterflow switches, or other normally-open contact devices.
Each module is assigned a unique address on the Signaling Line Circuit (SLC) via onboard DIP switches, enabling precise location identification on IntelliKnight fire alarm control panels. The SD500-MIM continuously supervises the IDC using an end-of-line (EOL) resistor, alerting the panel to both alarm contact closures and open-circuit wiring faults.
Key Features & Benefits:
- Class B (Style B) IDC Supervision: Monitors a single dry-contact circuit for alarm and wiring faults
- Compact Miniature Design: Fits inside a single-gang box behind the device for discreet installation
- DIP Switch Addressing: Fast, tool-free programming of SLC loop address (01–99)
- Long-Range Wiring: Supports up to 2,500 ft of 14 AWG wiring from module to device
- Low Profile & Lightweight: Simplifies mounting in confined spaces
- UL Listed: Ensures compliance with fire safety standards
Applications:
- Intelligent Fire Alarm Systems: Supervise pull stations, flow switches, and other dry-contact devices
- Retrofit Projects: Miniature size allows installation in existing junction boxes
- New Construction: Integrates seamlessly with Silent Knight IntelliKnight panels
Enhance your fire protection system’s precision and reliability with the Silent Knight SD500-MIM, delivering robust IDC monitoring in a space-saving package.
Additional information
Brand | Silent Knight |
---|---|
Model No | SD500-MIM |
Type | Mini Input Module |
PHYSICAL | |
SD500-MIM | 1.5”W x 2.5″H x 0.7″D (3.8 x 6.4 x 1.8 cm) |
ENVIRONMENTAL | |
Operating Temperature | 32°F to 120°F (0°C to 49°C) |
Humidity | : 0 to 93% relative humidity (non condensing |
ELECTRICAL | |
Standby Current | 0.55mA |
Alarm Current | : 23mA max for one device; 46 mA max for two devices; 0.55mA for each additional device |
Line Resistance: | 50W max |

Silent Knight SD500-MIM Mini Addressable Input Module – SLC Loop, Fault Supervision, UL Listed
£134.24
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