{"product_id":"3-asu4-edwards-signaling-audio-source-unit-for-voice-evacuation-and-paging-systems","title":"3-ASU\/4 | Edwards Signaling Audio Source Unit for Voice Evacuation and Paging Systems","description":"\u003ch4\u003eDescription \u003c\/h4\u003e\n\u003cp data-end=\"396\" data-start=\"144\"\u003eThe Edwards Signaling 3-ASU\/4 Audio Source Unit is a modular audio distribution and signal control device designed for use with Edwards fire alarm and emergency communication systems. It provides reliable audio input and routing functions for voice evacuation, paging, and alerting operations. The unit ensures clear, consistent sound transmission in life-safety and mass notification systems.\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: 100%; height: 391.876px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 29.4225%; height: 19.5938px;\"\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.3582%; 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: 29.4225%; height: 19.5938px;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.3582%; height: 19.5938px;\"\u003eEdwards Signaling\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 29.4225%; height: 19.5938px;\"\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.3582%; height: 19.5938px;\"\u003eFire and Emergency Communication\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 29.4225%; height: 19.5938px;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.3582%; height: 19.5938px;\"\u003e3-ASU\/4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 29.4225%; height: 19.5938px;\"\u003e\u003cstrong\u003eSubcategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.3582%; height: 19.5938px;\"\u003eAudio Source Units\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 29.4225%; height: 19.5938px;\"\u003e\u003cstrong\u003eSeries\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.3582%; height: 19.5938px;\"\u003e3-ASU Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 29.4225%; height: 19.5938px;\"\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.3582%; height: 19.5938px;\"\u003eModular Audio Source Unit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 29.4225%; height: 19.5938px;\"\u003e\u003cstrong\u003eFunction\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.3582%; height: 19.5938px;\"\u003eAudio Input and Routing Control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 29.4225%; height: 19.5938px;\"\u003e\u003cstrong\u003eCompatible Systems\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.3582%; height: 19.5938px;\"\u003eEdwards Fire Alarm and Voice Evacuation Systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 29.4225%; height: 19.5938px;\"\u003e\u003cstrong\u003eInput Channels\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.3582%; height: 19.5938px;\"\u003eSingle or Multiple (depending on configuration)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 29.4225%; height: 19.5938px;\"\u003e\u003cstrong\u003eOutput Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.3582%; height: 19.5938px;\"\u003eLine-Level Audio Signal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 29.4225%; height: 19.5938px;\"\u003e\u003cstrong\u003eGain Adjustment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.3582%; height: 19.5938px;\"\u003eManual \/ Trim-Pot Adjustable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 29.4225%; height: 19.5938px;\"\u003e\u003cstrong\u003eSupervision\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.3582%; height: 19.5938px;\"\u003eBuilt-In Audio Path Monitoring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 29.4225%; height: 19.5938px;\"\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.3582%; height: 19.5938px;\"\u003eEdwards CAB Enclosure (Wall or Rack Mount)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 29.4225%; height: 19.5938px;\"\u003e\u003cstrong\u003ePower Requirement\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.3582%; height: 19.5938px;\"\u003eFrom System Control or Dedicated Supply (per model)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 29.4225%; height: 19.5938px;\"\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.3582%; height: 19.5938px;\"\u003e32°F to 120°F (0°C to 49°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 29.4225%; height: 19.5938px;\"\u003e\u003cstrong\u003eEnclosure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.3582%; height: 19.5938px;\"\u003eMetal Module Frame with Front Access Terminals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 29.4225%; height: 19.5938px;\"\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.3582%; height: 19.5938px;\"\u003eApprox. 5 x 7 x 2 in (typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 29.4225%; height: 19.5938px;\"\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.3582%; height: 19.5938px;\"\u003eVoice Evacuation, Paging, and Emergency Audio Systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 29.4225%; height: 19.5938px;\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.3582%; height: 19.5938px;\"\u003eApprox. 1.2 lbs\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 3-ASU\/4\u003c\/h4\u003e\n\u003cp\u003eThe 3-ASU\/4 is part of the Edwards 3-ASU Series, developed for multi-zone audio control and integration within emergency communication and fire alarm systems. It functions as the interface between external audio sources—such as microphones, tone generators, or prerecorded messages—and the amplifier or distribution network. The unit provides level adjustment, signal conditioning, and system supervision to ensure reliable audio performance. Designed for mounting in Edwards CAB series enclosures, the 3-ASU\/4 simplifies installation and maintenance in centralized or distributed system configurations.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eModular Audio Interface: Provides input routing and control for voice evacuation or paging systems.\u003c\/li\u003e\n\u003cli\u003eHigh Signal Integrity: Maintains clear, distortion-free transmission of audio signals.\u003c\/li\u003e\n\u003cli\u003eCompatible with Edwards Systems: Designed for integration into Edwards fire alarm and mass notification platforms.\u003c\/li\u003e\n\u003cli\u003eSupervised Operation: Continuously monitors audio circuits for faults or interruptions.\u003c\/li\u003e\n\u003cli\u003eAdjustable Gain Control: Allows tuning of input levels to match connected audio sources.\u003c\/li\u003e\n\u003cli\u003eCompact Design: Fits standard Edwards CAB enclosures for streamlined installation.\u003c\/li\u003e\n\u003cli\u003eReliable Construction: Built for long-term performance in life-safety communication systems.\u003c\/li\u003e\n\u003cli\u003eField-Serviceable Module: Enables easy replacement and maintenance without full system downtime.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe 3-ASU\/4 delivers the reliability and precision required for supervised audio signal control in emergency communication and voice evacuation systems.\u003c\/p\u003e","brand":"Edwards Signaling","offers":[{"title":"Default Title","offer_id":49105125179648,"sku":"3-ASU\/4","price":3820.53,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0388\/5331\/2557\/files\/photo_apr_20_1_35_00_pm_edited.jpg?v=1785540818","url":"https:\/\/alotechparts.com\/products\/3-asu4-edwards-signaling-audio-source-unit-for-voice-evacuation-and-paging-systems","provider":"Alo Tech Solutions","version":"1.0","type":"link"}