SK-4 | Silent Knight Four-Zone Conventional Fire Alarm Control Panel

Silent Knight · Fire & Life Safety

Description  The Silent Knight SK-4 is a four-zone conventional fire alarm control panel that integrates modern microprocessor technology for reliable protection. It supports multiple module options for expanded functionality, including transmitters, interface modules, and zone relay modules.     Technical Specifications  Condition New/Never Used Surplus Brand Silent Knight Category Fire Alarm Systems Part Number SK-4 Subcategory Conventional Fire Alarm Control Panels Initiating Device Circuits Four Class B (IDC) Notification Appliance Circuits Two Class B (NAC) Synchronization Support System Sensor®, Gentex®, Wheelock® devices Relays Form C alarm, trouble, and supervisory relays Zone Disable Individual disable switches per zone Walk Test Mode Silent or audible operation Module Support Transmitter, interface, and zone relay modules Battery Type Sealed lead acid only Battery Charging Circuit 27.6 VDC @ 0.8A max flat charge Battery Charging Capacity 18 AH Battery Size in Panel 7 AH max (larger in RBB accessory cabinet) Compatible Devices See SK document PN 52612 Cabinet Backbox Dimensions 14.5" W x 15" H x 3" D (36.83 x 38.10 x 7.62 cm) Cabinet Door Dimensions 14.677" W x 15.342" H x 0.375" D (37.28 x 38.97 x 0.95 cm) Cabinet Color Red Operating Temperature Standard indoor FACP range (32°F to 120°F / 0°C to 49°C) Weight Approx. 15 lbs   Information About SK-4 The SK-4 is a Silent Knight four-zone conventional fire alarm control panel designed to provide dependable fire protection for small to medium facilities. It supports four Class B initiating device circuits, two Class B notification appliance circuits, and synchronization with System Sensor®, Gentex®, and Wheelock® devices. Optional transmitter, interface, and zone relay modules expand its functionality to support municipal tie-ins, remote annunciation, and additional relay outputs. With features like zone disable switches, Form C relays, and selectable silent or audible walk test functions, the SK-4 offers a practical, service-friendly solution for conventional fire alarm applications. Key Features: Four Initiating Circuits: Provides four Class B IDC circuits for smoke detectors, pull stations, and other initiating devices. Two Notification Circuits: Includes two Class B NACs to power horns, strobes, and other notification appliances. Synchronization Compatibility: Supports synchronized output for System Sensor®, Gentex®, and Wheelock® notification appliances. Relay Outputs: Equipped with Form C alarm, trouble, and supervisory relays to integrate with auxiliary devices. Zone Disable Control: Each zone includes a dedicated disable switch for easy maintenance and troubleshooting. Walk Test Functions: Offers both silent and audible walk test modes to simplify inspection and verification. Expandable Options: Supports transmitter modules for municipal tie-ins, interface modules for remote annunciators, and zone relay modules for expanded output capability. Battery Support: Charges sealed lead acid batteries up to 7 AH in-panel or 18 AH with external RBB cabinet for extended standby power. Service-Friendly Design: Supervised annunciator wiring, fuseless overload protection, and trouble LEDs help minimize downtime. The SK-4 delivers the reliability and precision required for conventional fire detection, zone management, and dependable notification in smaller facility applications.

Brand: Silent Knight · Category: Fire & Life Safety

Key features

• Four Initiating Circuits: Provides four Class B IDC circuits for smoke detectors, pull stations, and other initiating devices.
• Two Notification Circuits: Includes two Class B NACs to power horns, strobes, and other notification appliances.
• Synchronization Compatibility: Supports synchronized output for System Sensor®, Gentex®, and Wheelock® notification appliances.
• Relay Outputs: Equipped with Form C alarm, trouble, and supervisory relays to integrate with auxiliary devices.
• Zone Disable Control: Each zone includes a dedicated disable switch for easy maintenance and troubleshooting.
• Walk Test Functions: Offers both silent and audible walk test modes to simplify inspection and verification.
• Expandable Options: Supports transmitter modules for municipal tie-ins, interface modules for remote annunciators, and zone relay modules for expanded output capability.
• Battery Support: Charges sealed lead acid batteries up to 7 AH in-panel or 18 AH with external RBB cabinet for extended standby power.
• Service-Friendly Design: Supervised annunciator wiring, fuseless overload protection, and trouble LEDs help minimize downtime.

Specifications

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