{"product_id":"sk-5499-silent-knight-9-amp-power-supply","title":"SK-5499 | Silent Knight 9 Amp Power Supply","description":"\u003ch4\u003eDescription \u003c\/h4\u003e\n\u003cp data-start=\"284\" data-end=\"574\" class=\"\"\u003eThe 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.\u003c\/p\u003e\n\u003cp data-start=\"284\" data-end=\"574\" class=\"\"\u003e \u003c\/p\u003e\n\u003cp data-start=\"284\" data-end=\"574\" class=\"\"\u003e \u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications \u003c\/h4\u003e\n\u003ctable width=\"100%\" style=\"height: 426.985px; width: 100%;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 32.9844px;\"\u003e\n\u003cth style=\"width: 29.9961%; text-align: left; height: 32.9844px;\" class=\"text-left text-body1 text-bold py-10 pr-10 desktop:pr-[10rem] desktop:text-nowrap\"\u003eCondition\u003c\/th\u003e\n\u003ctd style=\"width: 69.6403%; height: 32.9844px;\" class=\"text-left text-body1 py-10 desktop:w-[60%]\"\u003eNew\/Never Used Surplus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 23.125px;\"\u003e\n\u003cth style=\"width: 29.9961%; text-align: left; height: 23.125px;\" class=\"text-left text-body1 text-bold py-10 pr-10 desktop:pr-[10rem] desktop:text-nowrap\"\u003eBrand\u003c\/th\u003e\n\u003ctd style=\"width: 69.6403%; height: 23.125px;\" class=\"text-left text-body1 py-10 desktop:w-[60%]\"\u003e\u003cspan data-sheets-root=\"1\"\u003eSilent Knight\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 24.2188px;\"\u003e\n\u003cth style=\"width: 29.9961%; text-align: left; height: 24.2188px;\"\u003eCategory\u003c\/th\u003e\n\u003ctd style=\"width: 69.6403%; height: 24.2188px;\"\u003e\n\u003cdiv class=\"mt-1 md:mt-0 column-left basis-2\/4 divide-y divide-rad-gray-10 border-b-[0.0625rem] border-rad-gray-10 md:border-0\"\u003e\n\u003cdiv class=\"flex gap-[1.75rem] md:gap-x-0 xl:gap-x-[1.875rem]\"\u003e\n\u003cdiv class=\"text-body-4 w-full font-light py-5 pl-4 md:py-6 md:pl-6 text-rad-gray-70\"\u003e\n\u003cdiv class=\"max-w-[8rem] break-words\"\u003e\n\u003cspan\u003e\u003c\/span\u003eFire System Components\u003cbr\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 20px;\"\u003e\n\u003cth style=\"width: 29.9961%; text-align: left; height: 20px;\"\u003ePart Number\u003c\/th\u003e\n\u003ctd style=\"width: 69.6403%; height: 20px;\"\u003e\u003cspan data-sheets-root=\"1\"\u003eSK-5499\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 22.0938px;\"\u003e\n\u003cth style=\"width: 29.9961%; text-align: left; height: 22.0938px;\"\u003e\u003cspan\u003eSubcategory\u003c\/span\u003e\u003c\/th\u003e\n\u003ctd style=\"width: 69.6403%; height: 22.0938px;\"\u003e\u003cspan data-sheets-root=\"1\"\u003e\u003cspan\u003ePower Supplies \/ NAC Expanders\u003c\/span\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 29.8125px;\"\u003e\n\u003cth class=\"text-left text-body1 text-bold py-10 pr-10 desktop:pr-[10rem] desktop:text-nowrap\" style=\"width: 29.9961%; text-align: left; height: 29.8125px;\"\u003eOutput Voltage\u003c\/th\u003e\n\u003ctd class=\"text-left text-body1 py-10 desktop:w-[60%]\" style=\"width: 69.6403%; height: 29.8125px;\"\u003e\u003cspan\u003e24 VDC regulated\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 26.2188px;\"\u003e\n\u003cth style=\"width: 29.9961%; text-align: left; height: 26.2188px;\"\u003eOutput Current\u003c\/th\u003e\n\u003ctd style=\"width: 69.6403%; height: 26.2188px;\"\u003e9 Amps total\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 26.875px;\"\u003e\n\u003cth class=\"text-left text-body1 text-bold py-10 pr-10 desktop:pr-[10rem] desktop:text-nowrap\" style=\"width: 29.9961%; text-align: left; height: 26.875px;\"\u003eNAC Outputs\u003cbr\u003e\n\u003c\/th\u003e\n\u003ctd class=\"text-left text-body1 py-10 desktop:w-[60%]\" style=\"width: 69.6403%; height: 26.875px;\"\u003e4 Class B, 2 Class A, or hybrid\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003cth style=\"width: 29.9961%; text-align: left; height: 39.1875px;\"\u003eAuxiliary Output\u003c\/th\u003e\n\u003ctd style=\"width: 69.6403%; height: 39.1875px;\"\u003e1 continuous\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 23.1875px;\"\u003e\n\u003cth style=\"width: 29.9961%; text-align: left; height: 23.1875px;\"\u003eAC Input\u003c\/th\u003e\n\u003ctd style=\"width: 69.6403%; height: 23.1875px;\"\u003e120 VAC at 3.0 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 29.9961%; text-align: left; height: 19.5938px;\"\u003eStandby Current\u003c\/th\u003e\n\u003ctd style=\"width: 69.6403%; height: 19.5938px;\"\u003e75 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 20.5938px;\"\u003e\n\u003cth style=\"width: 29.9961%; text-align: left; height: 20.5938px;\"\u003eAlarm Current\u003c\/th\u003e\n\u003ctd style=\"width: 69.6403%; height: 20.5938px;\"\u003e205 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 29.9961%; text-align: left; height: 19.5938px;\"\u003eBattery Backup\u003c\/th\u003e\n\u003ctd style=\"width: 69.6403%; height: 19.5938px;\"\u003eSupported with built-in charger\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003cth style=\"width: 29.9961%; text-align: left; height: 39.1875px;\"\u003eSynchronization\u003c\/th\u003e\n\u003ctd style=\"width: 69.6403%; height: 39.1875px;\"\u003eSystem Sensor®, Gentex®, Wheelock®, AMSECO®, Faraday®\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 29.9961%; text-align: left; height: 19.5938px;\"\u003eMounting Type\u003c\/th\u003e\n\u003ctd style=\"width: 69.6403%; height: 19.5938px;\"\u003eSurface mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 29.9961%; text-align: left; height: 19.5938px;\"\u003eDimensions (inches)\u003c\/th\u003e\n\u003ctd style=\"width: 69.6403%; height: 19.5938px;\"\u003e12.25” W x 16” H x 3” D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 21.125px;\"\u003e\n\u003cth style=\"width: 29.9961%; text-align: left; height: 21.125px;\"\u003eWeight\u003c\/th\u003e\n\u003ctd style=\"width: 69.6403%; height: 21.125px;\"\u003e\u003cspan\u003e 3 lbs\u003cbr\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003cspan style=\"font-size: 0.875rem;\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eInformation About \u003cspan data-sheets-root=\"1\"\u003eSK-5499\u003c\/span\u003e\n\u003c\/h4\u003e\n\u003cp\u003eThe 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.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e9 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.\u003c\/li\u003e\n\u003cli\u003eFlexible 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.\u003c\/li\u003e\n\u003cli\u003eBuilt-In Synchronization: Supports synchronization protocols for leading brands like System Sensor®, Gentex®, and Wheelock® to ensure consistent alarm signaling.\u003c\/li\u003e\n\u003cli\u003eEfficient Switch-Mode Design: Reduces heat buildup and improves energy efficiency by up to 50% compared to traditional linear power supplies.\u003c\/li\u003e\n\u003cli\u003eIndependent Trouble Relay: Sends a separate signal when system issues occur, such as battery failure or power loss, for better fault monitoring.\u003c\/li\u003e\n\u003cli\u003eDedicated Auxiliary Power Output: Includes a continuous 24VDC output for devices that need uninterrupted power regardless of NAC status.\u003c\/li\u003e\n\u003cli\u003eSimple DIP Switch Setup: Easily configurable using onboard DIP switches without special tools or programming devices.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe SK-5499 is a reliable and efficient power expander, ideal for growing fire and security systems that require additional NACs and auxiliary power distribution.\u003c\/p\u003e","brand":"Silent Knight","offers":[{"title":"Default Title","offer_id":49105350295808,"sku":"SK-5499","price":1615.53,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0388\/5331\/2557\/files\/SK-PS10.jpg?v=1785545406","url":"https:\/\/alotechparts.com\/products\/sk-5499-silent-knight-9-amp-power-supply","provider":"Alo Tech Solutions","version":"1.0","type":"link"}