{"product_id":"alerton-vav-sd2a-e-visuallogic-bacnet-single-duct-variable-air-volume-field-controller","title":"Alerton VAV-SD2A-E VisualLogic BACnet Single-Duct Variable Air Volume Field Controller","description":"\u003ch4 class=\"PDq2pG_selectionAnchorContainer\"\u003eDescription\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h4\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003eThe Alerton VAV-SD2A-E is a fully programmable BACnet field controller designed for pressure-independent control of single-duct Variable Air Volume (VAV) terminal units. Featuring an integrated airflow sensor, configurable analog outputs, and native BACnet MS\/TP communication, the VAV-SD2A-E delivers precise airflow regulation, energy-efficient operation, and seamless integration into commercial building automation systems.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNew\/Never Used Surplus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAlerton\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBuilding Automation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eVAV-SD2A-E\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubcategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBACnet VAV Field Controller\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSeries\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eVisualLogic®\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eProgrammable DDC VAV Controller\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCommunication Protocol\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBACnet MS\/TP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCommunication Speed\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 115.2 kbps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSingle-Duct Variable Air Volume (VAV) Terminal Units\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eControl Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePressure-Independent Airflow Control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIntegrated Airflow Sensor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFactory Calibrated Differential Pressure Sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAnalog Outputs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 Selectable Outputs (0–10 VDC or 0–20 mA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSupported Equipment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eVariable-Speed Fans, Analog Valves, VAV Dampers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProgramming Software\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAlerton VisualLogic™\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMemory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNonvolatile Flash Memory\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Wall Sensors\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAlerton Microtouch™, BACtalk® Microset™, Microset II®, Microset 4®\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConfiguration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAdjustable Minimum, Maximum, and Reheat Airflow Settings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Supply\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e24 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDirect Mount on VAV Terminal Unit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTypical Applications\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSingle-Duct VAV Boxes, Series Fan-Powered VAV Units, Commercial Office Buildings, Hospitals, Schools, Hotels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApproximately 0.5 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eInformation About \u003cspan\u003eVAV-SD2A-E\u003c\/span\u003e\n\u003c\/h4\u003e\n\u003cp class=\"PDq2pG_selectionAnchorContainer\"\u003eThe VAV-SD2A-E is part of the Alerton VisualLogic® family of intelligent VAV controllers developed for advanced HVAC zone control applications. Designed specifically for single-duct VAV boxes, including series fan-powered terminal units, the controller incorporates a factory-calibrated differential airflow sensor that enables accurate pressure-independent airflow regulation without requiring external pressure transducers. The controller is fully programmable using Alerton's VisualLogic graphical programming environment and stores all applications and configuration data in nonvolatile Flash memory to ensure reliable operation during power interruptions. Native BACnet MS\/TP communication allows direct integration with Alerton Compass®, Envision, and other BACnet supervisory systems while supporting intelligent wall sensors such as the Alerton Microtouch™, BACtalk® Microset™, Microset II®, and Microset 4® for local occupant interaction and technician diagnostics.\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNative BACnet MS\/TP controller: Communicates directly on BACnet networks at speeds up to 115.2 kbps.\u003c\/li\u003e\n\u003cli\u003ePressure-independent VAV control: Integrated airflow sensor maintains accurate airflow regardless of duct pressure changes.\u003c\/li\u003e\n\u003cli\u003eDesigned for single-duct VAV systems: Optimized for standard and fan-powered VAV terminal units.\u003c\/li\u003e\n\u003cli\u003eIntegrated airflow sensor: Factory calibrated and field adjustable during system balancing.\u003c\/li\u003e\n\u003cli\u003eTwo configurable analog outputs: Selectable as 0–10 VDC or 0–20 mA for variable-speed fans, valves, and actuators.\u003c\/li\u003e\n\u003cli\u003eFully programmable logic: Configured using Alerton VisualLogic™ graphical programming software.\u003c\/li\u003e\n\u003cli\u003eNonvolatile Flash memory: Preserves programs and configuration without battery backup.\u003c\/li\u003e\n\u003cli\u003eIntelligent wall sensor compatibility: Supports Microtouch™, Microset™, Microset II®, and Microset 4® devices.\u003c\/li\u003e\n\u003cli\u003eVariable-speed fan support: Eliminates the need for additional control hardware in fan-powered VAV applications.\u003c\/li\u003e\n\u003cli\u003eAdjustable airflow parameters: Minimum, maximum, and reheat airflow settings are field configurable.\u003c\/li\u003e\n\u003cli\u003eFast digital processing: Provides responsive and stable HVAC control performance.\u003c\/li\u003e\n\u003cli\u003eOptional filtered version: VAV-SD2A-E-F model includes an inlet filter to reduce dust contamination.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe VAV-SD2A-E delivers the reliability and precision required for intelligent VAV terminal control, commercial HVAC automation, and energy-efficient BACnet building management.\u003c\/p\u003e","brand":"Alerton","offers":[{"title":"Default Title","offer_id":52175350432042,"sku":"VAV-SD2A-E","price":1082.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/0392\/4266\/files\/s-l1600_f03db185-dab1-40db-a8c6-c2b9cc8da317.webp?v=1785960058","url":"https:\/\/iqelectro.com\/products\/alerton-vav-sd2a-e-visuallogic-bacnet-single-duct-variable-air-volume-field-controller","provider":"IQElectro","version":"1.0","type":"link"}