Description
The Silent Knight IDP-RELAY-6 is an intelligent addressable relay control module designed for compatible Silent Knight fire alarm systems. Specifically, it provides six independently programmable Form C relay outputs for controlling a wide variety of commercial life-safety equipment. This product is intended exclusively for commercial fire alarm installations and is not surveillance equipment, communications equipment, consumer electronics, tracking equipment, or recording devices.
Built for dependable long-term performance, the IDP-RELAY-6 features rotary address switches, plug-in terminal blocks, individual LED status indicators, and flexible relay programming. In addition, its compact design allows one or two modules to be installed inside a compatible IDP-ACB cabinet, simplifying both new installations and system expansions.
Product Functions
The Silent Knight IDP-RELAY-6 supports commercial fire alarm systems by providing:
- Six independently programmable Form C relay outputs
- Addressable relay control
- Flexible equipment control through compatible fire alarm panels
- Individual LED status indication for each relay
- Rotary address switch configuration
- Support for HVAC, door holders, smoke control, and auxiliary equipment
- Reliable operation with compatible Silent Knight fire alarm systems
Electrical & System Information
The IDP-RELAY-6 operates with compatible Silent Knight intelligent fire alarm control panels using the system’s Signaling Line Circuit (SLC). Furthermore, each relay can be individually programmed to respond to specific events, zones, or system conditions.
The module provides six dry Form C relay contacts for normally open or normally closed applications. Up to three unused relay circuits may also be disabled to simplify programming and installation. Always verify compatibility before installation.
Features
Six Form C Relay Outputs
The IDP-RELAY-6 provides six independently controlled Form C relay contacts. As a result, a single module can manage multiple control functions throughout the fire alarm system.
Flexible Relay Programming
Each relay can be programmed independently through the compatible Silent Knight control panel. Consequently, installers can configure outputs for a wide variety of building control applications.
Individual LED Indicators
Each relay includes its own LED status indicator. Therefore, technicians can quickly identify relay activity during installation, testing, and maintenance.
Rotary Address Switches
Rotary decimal switches simplify address assignment without requiring additional programming tools. In addition, installers can configure the module quickly during commissioning.
Plug-In Terminal Blocks
Removable plug-in terminal blocks accept 12–18 AWG wiring, making installation and servicing faster while reducing wiring errors.
Mounting & Design
The Silent Knight IDP-RELAY-6 is designed for installation inside the compatible IDP-ACB cabinet, which accommodates up to two relay modules. Furthermore, the compact circuit board includes mounting hardware and removable wiring terminals for efficient installation and future maintenance.
Its durable construction makes the module suitable for commercial facilities requiring dependable equipment control through the fire alarm system.
Protection & Applications
The IDP-RELAY-6 is designed exclusively for commercial fire alarm systems requiring intelligent relay control.
Typical applications include:
- HVAC shutdown
- Smoke control systems
- Door holder release
- Elevator interface
- Fan control
- Damper control
- Fire alarm auxiliary control
- Building automation interface
Always install the module according to local building codes, fire codes, NFPA requirements, and the manufacturer’s installation instructions.
Compatibility
The Silent Knight IDP-RELAY-6 is designed for use with compatible Silent Knight intelligent fire alarm control panels and the IDP-ACB mounting cabinet.
Compatible systems include:
- Silent Knight 5700
- Silent Knight 5808
- Silent Knight 5820XL
- Silent Knight 5820XL-EVS
- Silent Knight 6700
- Silent Knight 6808
- Silent Knight 6820
- Silent Knight 6820EVS
Before purchasing or installing this module, verify compatibility with the intended fire alarm system and project requirements.
Technical Specifications
Manufacturer: Silent Knight
Model: IDP-RELAY-6
Product Type: Intelligent Addressable Six Relay Module
Relay Type: Six Form C Dry Contacts
Operating Voltage: 15–32 VDC
Standby Current: 1.45 mA Maximum
Alarm Current: 32 mA Maximum
Relay Pulse Current: 30 mA per Relay
Addressing Method: Rotary Decimal Switches
Wire Size: 12–18 AWG
Maximum SLC Loop Resistance: 40 Ω
Relay Contact Ratings:
- 3 A @ 30 VDC Resistive (Non-Coded)
- 2 A @ 30 VDC Resistive (Coded)
- 0.9 A @ 125 VAC Resistive
- 0.9 A @ 110 VDC Resistive
- Additional inductive ratings per manufacturer specifications
Operating Temperature: 32°F to 120°F (0°C to 49°C)
Relative Humidity: 10–85% Non-Condensing
Dimensions: 6.8 × 5.8 × 1.0 in (17.3 × 14.7 × 2.5 cm)
Mounting: IDP-ACB Cabinet
Listings: UL Listed (verify approvals for your specific application)
Always verify technical specifications using the manufacturer’s official documentation before installation.
Applications
The Silent Knight IDP-RELAY-6 is commonly installed in compatible commercial fire alarm systems serving:
- Office Buildings
- Schools
- Universities
- Hospitals
- Healthcare Facilities
- Hotels
- Government Buildings
- Retail Stores
- Warehouses
- Industrial Facilities
- Commercial Buildings
Before installation, verify compliance with local codes, project specifications, and manufacturer recommendations to ensure proper system operation.





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