{"product_id":"silent-knight-sk-4224-fire-panel-responsive-support","title":"SK-4224 | Silent Knight 4-Zone Conventional Fire Alarm Control Panel","description":"\u003ch4\u003eDescription \u003c\/h4\u003e\n\u003cp data-end=\"354\" data-start=\"3\"\u003e\u003cmeta charset=\"utf-8\"\u003eThe 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.\u003cbr\u003e\u003c\/p\u003e\n\u003cp data-start=\"20\" data-end=\"417\"\u003e \u003c\/p\u003e\n\u003cp data-start=\"20\" data-end=\"417\"\u003e \u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications \u003c\/h4\u003e\n\u003ctable style=\"width: 95.1087%; height: 372.282px;\" height=\"406\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 42.2914%; height: 19.5938px;\"\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 57.4779%; height: 19.5938px;\"\u003eNew\/Never Used Surplus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 42.2914%; height: 19.5938px;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 57.4779%; height: 19.5938px;\"\u003eSilent Knight\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 42.2914%; height: 19.5938px;\"\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 57.4779%; height: 19.5938px;\"\u003eFire Alarm Systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 42.2914%; height: 19.5938px;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 57.4779%; height: 19.5938px;\"\u003eSK-4224\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 42.2914%; height: 19.5938px;\"\u003e\u003cstrong\u003eSubcategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 57.4779%; height: 19.5938px;\"\u003eConventional Fire Alarm Control Panels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 42.2914%; height: 19.5938px;\"\u003e\u003cstrong\u003eZones\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 57.4779%; height: 19.5938px;\"\u003e4 Initiating Device Circuits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 42.2914%; height: 19.5938px;\"\u003e\u003cstrong\u003eZone Configuration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 57.4779%; height: 19.5938px;\"\u003e4 Class B or 2 Class A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 42.2914%; height: 19.5938px;\"\u003e\u003cstrong\u003ePower Supply\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 57.4779%; height: 19.5938px;\"\u003e24 VDC @ 2.5 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 42.2914%; height: 19.5938px;\"\u003e\u003cstrong\u003eNotification Appliance Circuits\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 57.4779%; height: 19.5938px;\"\u003e2 (2.5 A total)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 42.2914%; height: 19.5938px;\"\u003e\u003cstrong\u003eAlarm Relay\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 57.4779%; height: 19.5938px;\"\u003eBuilt-in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 42.2914%; height: 19.5938px;\"\u003e\u003cstrong\u003eTrouble Relay\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 57.4779%; height: 19.5938px;\"\u003eBuilt-in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 42.2914%; height: 19.5938px;\"\u003e\u003cstrong\u003eAuxiliary Power Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 57.4779%; height: 19.5938px;\"\u003e24 VDC @ 0.5 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 42.2914%; height: 19.5938px;\"\u003e\u003cstrong\u003eEnhanced Verification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 57.4779%; height: 19.5938px;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 42.2914%; height: 19.5938px;\"\u003e\u003cstrong\u003eCompatible Detectors\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 57.4779%; height: 19.5938px;\"\u003eUL Listed Smoke\/Heat Detectors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 42.2914%; height: 19.5938px;\"\u003e\u003cstrong\u003eExpansion Support\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 57.4779%; height: 19.5938px;\"\u003eSerial Driver Board, Remote Annunciators\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 42.2914%; height: 19.5938px;\"\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 57.4779%; height: 19.5938px;\"\u003eWall-Mounted Panel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 42.2914%; height: 19.5938px;\"\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 57.4779%; height: 19.5938px;\"\u003eTypical Commercial Range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 42.2914%; height: 19.5938px;\"\u003e\u003cstrong\u003eEnclosure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 57.4779%; height: 19.5938px;\"\u003eMetal Cabinet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 42.2914%; height: 19.5938px;\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 57.4779%; height: 19.5938px;\"\u003e11 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4\u003e\u003cbr\u003e\u003c\/h4\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eInformation About SK-4224\u003c\/h4\u003e\n\u003cp data-start=\"393\" data-end=\"947\"\u003e\u003cmeta charset=\"utf-8\"\u003eThe 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.\u003cbr\u003e\u003c\/p\u003e\n\u003cp data-end=\"828\" data-start=\"372\"\u003e\u003cstrong data-start=\"1085\" data-end=\"1102\"\u003eKey Features:\u003c\/strong\u003e\u003cstrong data-start=\"1085\" data-end=\"1102\"\u003e\u003c\/strong\u003e\u003cstrong data-start=\"1085\" data-end=\"1102\"\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFour Zone Supervision: Supports up to four Class B or two Class A initiating circuits.\u003c\/li\u003e\n\u003cli\u003e2.5 Amp Power Supply: Provides adequate power for detectors and notification devices.\u003c\/li\u003e\n\u003cli\u003eNotification Appliance Circuits: Two NACs rated at up to 2.5 amps total for horns and strobes.\u003c\/li\u003e\n\u003cli\u003eAlarm \u0026amp; Trouble Relays: Built-in relays for signaling alarm and trouble conditions.\u003c\/li\u003e\n\u003cli\u003eAuxiliary Power Output: .5 amp auxiliary output for powering accessories such as door holders.\u003c\/li\u003e\n\u003cli\u003eEnhanced Verification Mode: Distinguishes smoke detectors from pull stations for improved reliability.\u003c\/li\u003e\n\u003cli\u003eUL Listed: Meets UL standards for fire control units in protected premises.\u003c\/li\u003e\n\u003cli\u003eExpandable Installation: Compatible with serial driver boards and remote annunciators for system growth.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe SK-4224 delivers the reliability and precision required for conventional fire detection and notification control in commercial safety systems.\u003c\/p\u003e","brand":"Silent Knight","offers":[{"title":"Default Title","offer_id":51168006832426,"sku":"SK-4224","price":1224.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/0392\/4266\/files\/SK-4224-2-scaled.jpg?v=1771583657","url":"https:\/\/iqelectro.com\/products\/silent-knight-sk-4224-fire-panel-responsive-support","provider":"IQElectro","version":"1.0","type":"link"}