{"product_id":"kele-ucs-221e-2-stage-sequencer-24-vac-2-25-x-1-19-x-2-25-in-ucs-221e","title":"Kele UCS-221E 2-Stage Sequencer 24 Vac (2.25 x 1.19 x 2.25 in) UCS-221E","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe Kele UCS-221E is a 2-stage sequencer control module for HVAC systems that converts a voltage or current analog input into two SPDT relay outputs with adjustable setpoints and differentials. It accepts 0–20 mA or 0–15 VDC (jumper selectable), operates from 24 Vac ±10% (half-wave) or 24 Vdc ±10%, and provides LED relay status, snap-track mounting and screw-terminal connections. Relay contacts are rated 10 A @ 120 Vac and the unit may be daisy-chained for additional stages.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAccepts 0–20 mA or 0–15 VDC input (jumper selectable) with 250 Ω (mA) and 49.7 kΩ (VDC) input impedance\u003c\/li\u003e\n  \u003cli\u003eTwo SPDT relay outputs with adjustable setpoints and factory-set differential (0.5 mA \/ 0.375 V) and 10 A @ 120 Vac rating\u003c\/li\u003e\n  \u003cli\u003e24 Vac ±10% or 24 Vdc ±10% power, LED relay status, snap-track mounting and screw-terminal wiring\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eProduct Highlights\u003c\/h4\u003e\n\u003cp\u003e2-stage HVAC sequencer; 24 Vac\/Vdc operation; 0–20 mA or 0–15 VDC input; two SPDT relays, 10 A rating; snap-track mount.\u003c\/p\u003e\n\u003ch3\u003eProduct Information\u003c\/h3\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: KELE\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: UCS-221E\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: Kele\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMPN\u003c\/strong\u003e: UCS-221E\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType\u003c\/strong\u003e: 2-stage electronic sequencer control module\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: HVAC sequencing, boiler\/chiller sequencing, VAV control\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSupply Voltage\u003c\/strong\u003e: 24 Vac ±10% (half-wave) or 24 Vdc ±10%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSupply Current\u003c\/strong\u003e: 100 mA @ 24 Vac; 50 mA @ 24 Vdc maximum\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput Signal\u003c\/strong\u003e: Analog (0–20 mA or 0–15 VDC, jumper selectable)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput Range\u003c\/strong\u003e: 0–20 mA or 0–15 VDC (jumper selectable)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput Impedance\u003c\/strong\u003e: 250 Ω (mA input); 49.7 kΩ (VDC input)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAccuracy\u003c\/strong\u003e: ±1%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput\u003c\/strong\u003e: Two SPDT relays, adjustable via setpoint potentiometers\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRelay Differential\u003c\/strong\u003e: Factory set at 0.5 mA or 0.375 V; adjustable using plug-in resistors\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRelay Output Rating\u003c\/strong\u003e: 10 A @ 120 Vac\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWiring Terminations\u003c\/strong\u003e: Screw terminals\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMounting Type\u003c\/strong\u003e: Snap-track\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDisplay\u003c\/strong\u003e: LED (relay status indication)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions\u003c\/strong\u003e: 2.25 x 1.19 x 2.25 in\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.4 lb (0.18 kg)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e: 32° to 158° F (0° to 70° C)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Humidity\u003c\/strong\u003e: 5% to 95% RH (non-condensing)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApprovals\u003c\/strong\u003e: RoHS\u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"KELE","offers":[{"title":"Default Title","offer_id":51406685700402,"sku":"UCS-221E","price":159.76,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/313044384.jpg?v=1782977616","url":"https:\/\/voomisupply.com\/products\/kele-ucs-221e-2-stage-sequencer-24-vac-2-25-x-1-19-x-2-25-in-ucs-221e","provider":"Voomi Supply","version":"1.0","type":"link"}