{"product_id":"005128-silent-knight-4-channel-digital-fire-alarm-communicator-120vac-18-40vdc","title":"005128 | Silent Knight 4-Channel Digital Fire Alarm Communicator 120VAC \/ 18–40VDC","description":"\u003ch4\u003eDescription \u003c\/h4\u003e\n\u003cp data-end=\"396\" data-start=\"144\"\u003eThe Silent Knight 005128 is a 4-channel digital fire alarm communicator designed for reliable transmission of alarm and system status signals to a central monitoring station. Operating on 120VAC or 18–40VDC, it provides stable performance with low current consumption, supporting up to four independent communication channels for enhanced system supervision.\u003c\/p\u003e\n\u003cp class=\"\" data-end=\"574\" data-start=\"284\"\u003e \u003c\/p\u003e\n\u003cp class=\"\" data-end=\"574\" data-start=\"284\"\u003e \u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications \u003c\/h4\u003e\n\u003ctable style=\"width: 99.964%; height: 705.6px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 23.9247%; height: 19.6px;\"\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 75.7606%; height: 19.6px;\"\u003eNew\/Never Used Surplus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 23.9247%; height: 19.6px;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 75.7606%; height: 19.6px;\"\u003eSilent Knight\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 23.9247%; height: 19.6px;\"\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 75.7606%; height: 19.6px;\"\u003eFire Alarm Equipment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 23.9247%; height: 19.6px;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 75.7606%; height: 19.6px;\"\u003e005128\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 23.9247%; height: 19.6px;\"\u003e\u003cstrong\u003eSubcategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 75.7606%; height: 19.6px;\"\u003eDigital Fire Alarm Communicator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 23.9247%; height: 19.6px;\"\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 75.7606%; height: 19.6px;\"\u003e4-channel communicator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 23.9247%; height: 39.2px;\"\u003e\u003cstrong\u003ePrimary Power (AC)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 75.7606%; height: 39.2px;\"\u003e120 VAC, 60 Hz, 45 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 23.9247%; height: 39.2px;\"\u003e\u003cstrong\u003ePrimary Power (DC)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 75.7606%; height: 39.2px;\"\u003e18–40 VDC input\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 23.9247%; height: 19.6px;\"\u003e\u003cstrong\u003eChannel Inputs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 75.7606%; height: 19.6px;\"\u003e18–30 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 23.9247%; height: 19.6px;\"\u003e\u003cstrong\u003eColor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 75.7606%; height: 19.6px;\"\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 23.9247%; height: 19.6px;\"\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 75.7606%; height: 19.6px;\"\u003e4\" W × 8.75\" H × 1.25\" D (10.2 × 22.2 × 3.2 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 23.9247%; height: 19.6px;\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 75.7606%; height: 19.6px;\"\u003e2 lbs (0.91 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 23.9247%; height: 39.2px;\"\u003e\u003cstrong\u003eStandby Current (No Annunciator)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 75.7606%; height: 39.2px;\"\u003e84 mA @ 24 VDC max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 23.9247%; height: 39.2px;\"\u003e\u003cstrong\u003eStandby Current (With Annunciator)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 75.7606%; height: 39.2px;\"\u003e143 mA @ 24 VDC max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 23.9247%; height: 39.2px;\"\u003e\u003cstrong\u003eAlarm Current (No Annunciator)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 75.7606%; height: 39.2px;\"\u003e154 mA @ 24 VDC max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 23.9247%; height: 39.2px;\"\u003e\u003cstrong\u003eAlarm Current (With Annunciator)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 75.7606%; height: 39.2px;\"\u003e227 mA @ 24 VDC max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 23.9247%; height: 39.2px;\"\u003e\u003cstrong\u003eWatchdog Response Time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 75.7606%; height: 39.2px;\"\u003e50 seconds maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 23.9247%; height: 39.2px;\"\u003e\u003cstrong\u003eAC Monitor Input (5129 only)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 75.7606%; height: 39.2px;\"\u003eAC trouble output from FACP or 120VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 23.9247%; height: 39.2px;\"\u003e\u003cstrong\u003eDry Contact Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 75.7606%; height: 39.2px;\"\u003e4.7 VDC, 6 mA max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 23.9247%; height: 39.2px;\"\u003e\u003cstrong\u003eActive High Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 75.7606%; height: 39.2px;\"\u003e15 mA max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 23.9247%; height: 19.6px;\"\u003e\u003cstrong\u003eTotal DC Load\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 75.7606%; height: 19.6px;\"\u003e84 mA @ 24 VDC max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 23.9247%; height: 19.6px;\"\u003e\u003cstrong\u003eMounting Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 75.7606%; height: 19.6px;\"\u003eWall or panel-mounted configuration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 23.9247%; height: 19.6px;\"\u003e\u003cstrong\u003eConstruction\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 75.7606%; height: 19.6px;\"\u003eIndustrial-grade black housing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 23.9247%; height: 19.6px;\"\u003e\u003cstrong\u003eCertifications\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 75.7606%; height: 19.6px;\"\u003eUL listed for fire alarm communications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 23.9247%; height: 39.2px;\"\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 75.7606%; height: 39.2px;\"\u003eRemote alarm transmission for fire protection systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cbr\u003e\u003c\/h4\u003e\n\u003ch4\u003eInformation About \u003cspan data-sheets-root=\"1\"\u003e005128\u003c\/span\u003e\n\u003c\/h4\u003e\n\u003cp\u003eThe Silent Knight 005128 digital fire alarm communicator is designed to ensure secure and reliable signal transmission between a fire alarm control panel (FACP) and a central station receiver. It supports up to four communication channels, allowing redundant signal paths or multi-zone monitoring. This communicator operates on either 120VAC or 18–40VDC, providing installation flexibility in various fire alarm systems. It features low standby and alarm current draw, optimizing system power efficiency. Its compact 4-inch by 8.75-inch enclosure makes it suitable for integration within control panels or remote equipment rooms. With UL listing for fire alarm applications, the 005128 delivers reliable performance in commercial, institutional, and industrial environments.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFour-Channel Design: Provides independent communication channels for transmitting multiple alarm or supervisory signals.\u003c\/li\u003e\n\u003cli\u003eDual Power Operation: Operates on 120VAC or 18–40VDC for flexible system integration.\u003c\/li\u003e\n\u003cli\u003eLow Power Consumption: Optimized current draw in both standby and alarm conditions for efficient energy use.\u003c\/li\u003e\n\u003cli\u003eHigh Reliability: Built-in watchdog timer ensures consistent communication performance with a 50-second response time.\u003c\/li\u003e\n\u003cli\u003eFlexible Input Options: Accepts both AC and DC signal inputs from compatible FACPs or annunciators.\u003c\/li\u003e\n\u003cli\u003eCompact and Durable Construction: Small footprint allows installation in limited spaces with robust housing for protection.\u003c\/li\u003e\n\u003cli\u003eUL Listed for Fire Systems: Meets strict regulatory standards for use in fire alarm communication networks.\u003c\/li\u003e\n\u003cli\u003eSimple Integration: Designed for compatibility with Silent Knight FACPs and third-party systems with standard voltage inputs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe 005128 delivers the reliability and precision required for dependable alarm signal transmission in fire protection systems, ensuring continuous communication with monitoring centers.\u003c\/p\u003e","brand":"Silent Knight","offers":[{"title":"Default Title","offer_id":49105149001984,"sku":"005128","price":660.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0388\/5331\/2557\/files\/iqelectro_photo2_1_7e0dc04e-832d-4d4b-8a2e-3d5d997cc0dd.png?v=1785541333","url":"https:\/\/alotechparts.com\/products\/005128-silent-knight-4-channel-digital-fire-alarm-communicator-120vac-18-40vdc","provider":"Alo Tech Solutions","version":"1.0","type":"link"}