SK-4224 | Silent Knight 4-Zone Conventional Fire Alarm Control Panel

Silent Knight · Fire & Life Safety

Description  The Silent Knight SK-4224 is a conventional fire alarm control panel designed to supervise and manage up to four fire detection zones. It provides monitored initiating circuits and notification appliance control for coordinated alarm and trouble signaling. Engineered for commercial and institutional safety systems, it supports reliable event detection and response.     Technical Specifications  Condition New/Never Used Surplus Brand Silent Knight Category Fire Alarm Systems Part Number SK-4224 Subcategory Conventional Fire Alarm Control Panels Zones 4 Initiating Device Circuits Zone Configuration 4 Class B or 2 Class A Power Supply 24 VDC @ 2.5 A Notification Appliance Circuits 2 (2.5 A total) Alarm Relay Built-in Trouble Relay Built-in Auxiliary Power Output 24 VDC @ 0.5 A Enhanced Verification Yes Compatible Detectors UL Listed Smoke/Heat Detectors Expansion Support Serial Driver Board, Remote Annunciators Mounting Wall-Mounted Panel Operating Temperature Typical Commercial Range Enclosure Metal Cabinet Weight 11 lb   Information About SK-4224 The SK-4224 is a Silent Knight fire alarm control panel that serves as the central unit in a conventional fire detection system. It features four initiating device circuits configurable as either four Class B zones or two Class A zones to suit different installation requirements. The panel incorporates a 24 VDC, 2.5 amp power supply with dedicated alarm and trouble relays, plus auxiliary power output for accessories like door holders. Capable of driving two notification appliance circuits with supervised detection and enhanced verification logic, it is UL listed for use in NFPA-compliant fire alarm systems. Key Features: Four Zone Supervision: Supports up to four Class B or two Class A initiating circuits. 2.5 Amp Power Supply: Provides adequate power for detectors and notification devices. Notification Appliance Circuits: Two NACs rated at up to 2.5 amps total for horns and strobes. Alarm & Trouble Relays: Built-in relays for signaling alarm and trouble conditions. Auxiliary Power Output: .5 amp auxiliary output for powering accessories such as door holders. Enhanced Verification Mode: Distinguishes smoke detectors from pull stations for improved reliability. UL Listed: Meets UL standards for fire control units in protected premises. Expandable Installation: Compatible with serial driver boards and remote annunciators for system growth. The SK-4224 delivers the reliability and precision required for conventional fire detection and notification control in commercial safety systems.

Brand: Silent Knight · Category: Fire & Life Safety

Key features

• Four Zone Supervision: Supports up to four Class B or two Class A initiating circuits.
• 2.5 Amp Power Supply: Provides adequate power for detectors and notification devices.
• Notification Appliance Circuits: Two NACs rated at up to 2.5 amps total for horns and strobes.
• Alarm & Trouble Relays: Built-in relays for signaling alarm and trouble conditions.
• Auxiliary Power Output: .5 amp auxiliary output for powering accessories such as door holders.
• Enhanced Verification Mode: Distinguishes smoke detectors from pull stations for improved reliability.
• UL Listed: Meets UL standards for fire control units in protected premises.
• Expandable Installation: Compatible with serial driver boards and remote annunciators for system growth.

Specifications

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