SD500-MIM | Silent Knight Addressable Mini Input Module Class B Contact Monitor
Silent Knight · Industrial Automation & Electrical
Description The Silent Knight SD500-MIM is a compact addressable mini input module designed for use with IntelliKnight fire alarm control panels. It provides a supervised, single dry-contact input for monitoring devices such as pull stations or waterflow switches and fits easily inside a single-gang electrical box for discreet installation. Technical Specifications Condition New/Never Used Surplus Brand Silent Knight Category Fire Alarm Equipment Part Number SD500-MIM Subcategory Addressable Input Module Compatibility IntelliKnight fire alarm control panels (FACPs) Input Type Single dry-contact input Circuit Type Class B (Style B) contact monitor wiring Supervision Monitored using End-of-Line (EOL) resistor Addressing Method DIP switch programmable Wiring Distance Up to 2,500 ft from the monitored device Wire Size Up to 14 AWG Mounting Type Fits inside a single-gang electrical box Construction Compact plastic enclosure Dimensions 1.50" × 2.50" × 0.70" Color Neutral (ivory) finish Application Monitors contact closure devices such as pull stations, waterflow switches, and tamper switches Power Source From control panel SLC loop Supervised Functions Detects alarm contact closure and wiring fault (open circuit) conditions Certifications UL Listed, NFPA 72 compliant Weight 0.2 lbs Information About SD500-MIM The SD500-MIM is part of Silent Knight’s IntelliKnight series of addressable fire alarm modules, designed for flexible and reliable system integration. It serves as a single input monitor for dry-contact devices and connects directly to the control panel’s signal line circuit (SLC). The module supervises both alarm and fault conditions, sending precise point identification to the FACP for easy troubleshooting and maintenance. Its small size allows for installation inside standard single-gang boxes or behind wall plates, providing a clean, unobtrusive appearance. The SD500-MIM supports Class B wiring configurations and can be programmed quickly using DIP switches for fast system setup. Key Features Single Contact Monitoring: Provides one supervised dry-contact input for alarm or supervisory signal initiation. Class B Wiring Support: Compatible with Style B (Class B) contact monitor wiring for straightforward installation. Compact Design: Miniature form factor fits easily inside a single-gang box or behind existing device plates. Supervised Operation: Continuously monitors for alarm and open-circuit wiring faults using an EOL resistor. DIP Switch Addressing: Simple programmable addressing ensures quick configuration in the field. Extended Wiring Distance: Supports up to 2,500 ft of wiring between the monitored device and the module. Versatile Application: Ideal for monitoring pull stations, waterflow switches, and other dry-contact devices. UL Listed and NFPA Compliant: Meets fire safety standards for use in commercial and institutional systems. The SD500-MIM delivers the reliability and precision required for addressable fire alarm systems, providing compact and dependable monitoring of external contact devices.
Brand: Silent Knight · Category: Industrial Automation & Electrical
Key features
- Single Contact Monitoring: Provides one supervised dry-contact input for alarm or supervisory signal initiation.
- Class B Wiring Support: Compatible with Style B (Class B) contact monitor wiring for straightforward installation.
- Compact Design: Miniature form factor fits easily inside a single-gang box or behind existing device plates.
- Supervised Operation: Continuously monitors for alarm and open-circuit wiring faults using an EOL resistor.
- DIP Switch Addressing: Simple programmable addressing ensures quick configuration in the field.
- Extended Wiring Distance: Supports up to 2,500 ft of wiring between the monitored device and the module.
- Versatile Application: Ideal for monitoring pull stations, waterflow switches, and other dry-contact devices.
- UL Listed and NFPA Compliant: Meets fire safety standards for use in commercial and institutional systems.
Specifications
| Manufacturer part number | SD500-MIM |
|---|---|
| Condition | New/Never Used Surplus |
| Brand | Silent Knight |
| Category | Fire Alarm Equipment |
| Part Number | SD500-MIM |
| Subcategory | Addressable Input Module |
| Compatibility | IntelliKnight fire alarm control panels (FACPs) |
| Input Type | Single dry-contact input |
| Circuit Type | Class B (Style B) contact monitor wiring |
| Supervision | Monitored using End-of-Line (EOL) resistor |
| Addressing Method | DIP switch programmable |
| Wiring Distance | Up to 2,500 ft from the monitored device |
| Wire Size | Up to 14 AWG |
| Mounting Type | Fits inside a single-gang electrical box |
| Construction | Compact plastic enclosure |
| Dimensions | 1.50" × 2.50" × 0.70" |
| Color | Neutral (ivory) finish |
| Application | Monitors contact closure devices such as pull stations, waterflow switches, and tamper switches |
| Power Source | From control panel SLC loop |
| Supervised Functions | Detects alarm contact closure and wiring fault (open circuit) conditions |
| Certifications | UL Listed, NFPA 72 compliant |
| Weight | 0.2 lbs |
| Product type | Addressable Input Module |
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