{"product_id":"tac-xenta-sysv-3-75-281-ddc-controller-281-n-p-24v","title":"TAC Xenta SysV 3.75 281 DDC Controller 281\/N\/P 24V","description":"\u003cdiv class=\"[content-visibility:auto] [contain-intrinsic-size:auto_400px] px-2 -mx-2 pb-8 -mb-8 print:[content-visibility:visible]\"\u003e\n\u003cdiv class=\"group\"\u003e\n\u003cdiv class=\"contents\"\u003e\n\u003cdiv class=\"group relative relative pb-3\"\u003e\n\u003cdiv class=\"font-claude-response relative leading-[1.65rem] [\u0026amp;_pre\u0026gt;div]:bg-bg-000\/50 [\u0026amp;_pre\u0026gt;div]:border-0.5 [\u0026amp;_pre\u0026gt;div]:border-border-400 [\u0026amp;_.ignore-pre-bg\u0026gt;div]:bg-transparent [\u0026amp;_.standard-markdown_:is(p,blockquote,h1,h2,h3,h4,h5,h6)]:pl-2 [\u0026amp;_.standard-markdown_:is(p,blockquote,ul,ol,h1,h2,h3,h4,h5,h6)]:pr-8 [\u0026amp;_.progressive-markdown_:is(p,blockquote,h1,h2,h3,h4,h5,h6)]:pl-2 [\u0026amp;_.progressive-markdown_:is(p,blockquote,ul,ol,h1,h2,h3,h4,h5,h6)]:pr-8\"\u003e\n\u003cdiv class=\"standard-markdown grid-cols-1 grid [\u0026amp;_\u0026gt;_*]:min-w-0 gap-3 standard-markdown\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eDescription:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThe TAC Xenta 281 (Part No. 281\/N\/P) is a LonMark-certified direct digital controller designed for building automation and HVAC control applications. Engineered by TAC (now Schneider Electric), this compact DIN-rail mounted controller offers a comprehensive I\/O configuration including universal inputs, digital inputs, 0–10V analog outputs, and relay outputs — making it a preferred choice for commercial and industrial building management systems. Procurement teams in the USA rely on the Xenta 281 for retrofits and system expansions in energy management infrastructure. In the UAE, this controller is widely specified in smart building and district cooling projects across commercial and mixed-use developments. WeSellStocks.co supplies surplus and refurbished TAC Xenta 281 units to distributors, EPC contractors, and MRO buyers worldwide, offering reliable stock of discontinued and hard-to-source building automation controllers at competitive wholesale pricing.\u003c\/p\u003e\n\u003chr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eTechnical Specifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eBrand:\u003c\/strong\u003e TAC (Schneider Electric)\u003cbr\u003e\u003cstrong\u003eProduct Type:\u003c\/strong\u003e LonMark Direct Digital Controller (DDC)\u003cbr\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e 281\/N\/P | Order Code: 0-073-0030-0\u003cbr\u003e\u003cstrong\u003eIndustry Category:\u003c\/strong\u003e Building Automation \/ HVAC \/ Energy Management\u003cbr\u003e\u003cstrong\u003eSupply Voltage:\u003c\/strong\u003e 24 VAC\u003cbr\u003e\u003cstrong\u003ePower Consumption:\u003c\/strong\u003e 10 VA\u003cbr\u003e\u003cstrong\u003eAnalog Outputs:\u003c\/strong\u003e 0–10V (Y1, Y2, Y3) — Terminals 23–30\u003cbr\u003e\u003cstrong\u003eRelay Outputs:\u003c\/strong\u003e Max 2A (2A) at 250V AC — K1, K1C, K2, K3, K2C\u003cbr\u003e\u003cstrong\u003eUniversal Inputs:\u003c\/strong\u003e U1, U2, U3, U4 (COM via C1\/C2)\u003cbr\u003e\u003cstrong\u003eDigital Inputs:\u003c\/strong\u003e X1, X2\u003cbr\u003e\u003cstrong\u003eCommunication Ports:\u003c\/strong\u003e RS-232, OP (Operator Panel)\u003cbr\u003e\u003cstrong\u003eNetwork Protocol:\u003c\/strong\u003e LonWorks \/ LonMark\u003cbr\u003e\u003cstrong\u003eHardware Version:\u003c\/strong\u003e HW 2.2\u003cbr\u003e\u003cstrong\u003eSystem Software Version:\u003c\/strong\u003e SysV 3.74\u003cbr\u003e\u003cstrong\u003eNID:\u003c\/strong\u003e 041383B20200\u003cbr\u003e\u003cstrong\u003eMounting Type:\u003c\/strong\u003e DIN Rail\u003cbr\u003e\u003cstrong\u003eStandards \/ Compliance:\u003c\/strong\u003e CE, C-UL-US Listed (94XF), LonMark Certified, WEEE Compliant, FCC Part 15, Made in Sweden\u003cbr\u003e\u003cstrong\u003eCondition:\u003c\/strong\u003e Available upon request\u003cbr\u003e\u003cstrong\u003eOther Confirmed Specs:\u003c\/strong\u003e Suitable for plenum applications; all inputs and outputs (except relay) are Class 2; copper conductors only\u003c\/p\u003e\n\u003chr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eApplication:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThe TAC Xenta 281 DDC controller is deployed in commercial HVAC systems, BMS networks, and energy management installations within offices, hospitals, hotels, and industrial facilities. It integrates seamlessly into LonWorks-based building automation networks and supports a wide range of field device connections through its universal and digital input configuration. It is commonly specified by system integrators and EPC contractors during new installations and system upgrades, and is a sought-after replacement unit for facilities running legacy TAC or early Schneider Electric BMS infrastructure.\u003c\/p\u003e\n\u003chr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eFacilities managers and procurement engineers sourcing the TAC Xenta 281 controller — part number 281\/N\/P or order code 0-073-0030-0 — will find verified surplus stock available through WeSellStocks.co, a trusted wholesale supplier serving industrial buyers across the USA, UAE, and international markets. As an authorized-quality distributor of refurbished building automation equipment, WeSellStocks.co provides competitive pricing and global shipping for TAC Xenta and Schneider Electric DDC controllers to MRO teams, system integrators, and independent distributors worldwide.\u003c\/p\u003e\n\u003chr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eMetafields:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003ebrand:\u003c\/strong\u003e TAC \/ Schneider Electric\u003cbr\u003e\u003cstrong\u003epart_number:\u003c\/strong\u003e 281\/N\/P | 0-073-0030-0\u003cbr\u003e\u003cstrong\u003eproduct_type:\u003c\/strong\u003e LonMark Direct Digital Controller (DDC)\u003cbr\u003e\u003cstrong\u003eindustry_category:\u003c\/strong\u003e Building Automation \/ HVAC \/ Energy Management\u003cbr\u003e\u003cstrong\u003evoltage_rating:\u003c\/strong\u003e 24 VAC\u003cbr\u003e\u003cstrong\u003ecurrent_rating:\u003c\/strong\u003e 2A (Relay Outputs)\u003cbr\u003e\u003cstrong\u003epower_rating:\u003c\/strong\u003e 10 VA\u003cbr\u003e\u003cstrong\u003einput_voltage:\u003c\/strong\u003e 24 VAC\u003cbr\u003e\u003cstrong\u003eoutput_voltage:\u003c\/strong\u003e 0–10V (Analog) \/ 250V AC (Relay)\u003cbr\u003e\u003cstrong\u003emounting_type:\u003c\/strong\u003e DIN Rail\u003cbr\u003e\u003cstrong\u003estandards:\u003c\/strong\u003e CE, C-UL-US Listed, LonMark Certified, FCC Part 15, WEEE\u003cbr\u003e\u003cstrong\u003econdition:\u003c\/strong\u003e Available upon request\u003cbr\u003e\u003cstrong\u003estock_quantity_available:\u003c\/strong\u003e Available upon request\u003cbr\u003e\u003cstrong\u003etarget_markets:\u003c\/strong\u003e USA | UAE | Worldwide\u003cbr\u003e\u003cstrong\u003eglobal_shipping:\u003c\/strong\u003e Yes\u003c\/p\u003e\n\u003ch5 class=\"font-claude-response-body break-words whitespace-normal\"\u003econdition: used\u003c\/h5\u003e\n\u003ch5 class=\"font-claude-response-body break-words whitespace-normal\"\u003e\n\u003cspan class=\"selectable-text copyable-text xkrh14z\"\u003eTested\u003c\/span\u003e\u003cspan class=\"emoji x1rg5ohu x16dsc37 x19la9d6 x1fc57z9 x6ikm8r x10wlt62 x19co3pv x11tp94h xw4jnvo x1qx5ct2 xfibh0p xiy17q3 x1xsqp64 x1lkfr7t xexx8yu xyri2b x18d9i69 x1c1uobl\"\u003e\u003cspan class=\"xy9tlov x1bhl96m\"\u003e✅\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/h5\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"We Sell Stocks","offers":[{"title":"Default Title","offer_id":59490288566558,"sku":"Cabin : A-40- Henaz","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0807\/7230\/1086\/files\/6_b5918327-9582-4b75-8de6-bea3c2de5630.png?v=1781954198","url":"https:\/\/wesellstocks.co\/products\/tac-xenta-sysv-3-75-281-ddc-controller-281-n-p-24v","provider":"We Sell Stocks","version":"1.0","type":"link"}