SK-5499 | Silent Knight 9 Amp Power Supply

Silent Knight · Power Supplies & Transformers

Description  The Silent Knight SK-5499 is a high-capacity notification appliance circuit and auxiliary power expander designed to deliver 9 amps of filtered, regulated 24VDC power. Engineered for seamless integration with security and fire alarm control panels, it significantly expands device capacity while ensuring reliable power delivery and system protection.     Technical Specifications  Condition New/Never Used Surplus Brand Silent Knight Category Fire System Components Part Number SK-5499 Subcategory Power Supplies / NAC Expanders Output Voltage 24 VDC regulated Output Current 9 Amps total NAC Outputs 4 Class B, 2 Class A, or hybrid Auxiliary Output 1 continuous AC Input 120 VAC at 3.0 A Standby Current 75 mA Alarm Current 205 mA Battery Backup Supported with built-in charger Synchronization System Sensor®, Gentex®, Wheelock®, AMSECO®, Faraday® Mounting Type Surface mount Dimensions (inches) 12.25” W x 16” H x 3” D Weight  3 lbs       Information About SK-5499 The SK-5499 is a UL-listed power supply and NAC expander that provides 24VDC at 9 amps across multiple output configurations. It features four power-limited notification appliance circuits (NACs) that can be configured as four Class B, two Class A, or a hybrid of one Class A and two Class B. Designed with energy efficiency in mind, its advanced switch-mode power supply technology manages thermal output and power conversion up to 50% more effectively than comparable models. The unit includes its own AC power input (120 VAC at 3.0A), a battery charging circuit, and terminals for battery backup, enhancing system reliability in the event of power failure. Key Features: 9 Amp High-Capacity Output: Provides a full 9 amps of regulated 24VDC power to support a wide range of notification appliances and auxiliary devices reliably. Flexible NAC Configuration Options: Allows configuration as 4 Class B, 2 Class A, or a mix of 1 Class A and 2 Class B outputs to suit different installation needs. Built-In Synchronization: Supports synchronization protocols for leading brands like System Sensor®, Gentex®, and Wheelock® to ensure consistent alarm signaling. Efficient Switch-Mode Design: Reduces heat buildup and improves energy efficiency by up to 50% compared to traditional linear power supplies. Independent Trouble Relay: Sends a separate signal when system issues occur, such as battery failure or power loss, for better fault monitoring. Dedicated Auxiliary Power Output: Includes a continuous 24VDC output for devices that need uninterrupted power regardless of NAC status. Simple DIP Switch Setup: Easily configurable using onboard DIP switches without special tools or programming devices. The SK-5499 is a reliable and efficient power expander, ideal for growing fire and security systems that require additional NACs and auxiliary power distribution.

Brand: Silent Knight · Category: Power Supplies & Transformers

Key features

• 9 Amp High-Capacity Output: Provides a full 9 amps of regulated 24VDC power to support a wide range of notification appliances and auxiliary devices reliably.
• Flexible NAC Configuration Options: Allows configuration as 4 Class B, 2 Class A, or a mix of 1 Class A and 2 Class B outputs to suit different installation needs.
• Built-In Synchronization: Supports synchronization protocols for leading brands like System Sensor®, Gentex®, and Wheelock® to ensure consistent alarm signaling.
• Efficient Switch-Mode Design: Reduces heat buildup and improves energy efficiency by up to 50% compared to traditional linear power supplies.
• Independent Trouble Relay: Sends a separate signal when system issues occur, such as battery failure or power loss, for better fault monitoring.
• Dedicated Auxiliary Power Output: Includes a continuous 24VDC output for devices that need uninterrupted power regardless of NAC status.
• Simple DIP Switch Setup: Easily configurable using onboard DIP switches without special tools or programming devices.

Specifications

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