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

£134.24

Availability: 5 in stock Category:

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

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

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

£134.24

In stock

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