{"product_id":"new-for-keld-klt11-klt11dr230c-ac220v-cooling-and-heating-16a-temperature-controller","title":"KELD KLT11\/KLT11DR230C AC220V Cooling and Heating Temperature Controller","description":"\u003c!-- Koeed Product Description: KELD KLT11\/KLT11DR230C --\u003e\n\u003cdiv style=\"font-family: 'Segoe UI', Arial, sans-serif; color: #333; line-height: 1.6; width: 100%;\"\u003e\n\n  \u003c!-- SEO Introduction --\u003e\n  \u003csection style=\"margin-bottom: 30px;\"\u003e\n    \u003ch2 style=\"color: #0056b3; border-bottom: 2px solid #16c8c8; padding-bottom: 10px;\"\u003eKELD KLT11DR230C AC220V Digital Temperature Controller\u003c\/h2\u003e\n    \u003cp\u003e\n      The \u003cstrong\u003eKELD KLT11DR230C\u003c\/strong\u003e is a professional-grade digital thermostat designed for high-precision \u003cstrong\u003ecooling and heating control\u003c\/strong\u003e. Operating on a 230V AC power supply, this versatile controller is widely used in commercial refrigeration, industrial ovens, and climate-controlled storage. \n    \u003c\/p\u003e\n    \u003cp\u003e\n      Equipped with a crisp LED display and a high-capacity relay output, the \u003cstrong\u003eKLT11 series\u003c\/strong\u003e ensures reliable thermal management in demanding environments. Key industry keywords: \u003cem\u003eKELD KLT11, KLT11DR230C, Digital Thermostat, Refrigeration Controller, Heating Control, AC220V Temperature Switch, Industrial Automation.\u003c\/em\u003e\n    \u003c\/p\u003e\n  \u003c\/section\u003e\n\n  \u003c!-- Technical Specifications --\u003e\n  \u003csection style=\"margin-bottom: 30px;\"\u003e\n    \u003ch3 style=\"color: #0056b3;\"\u003eTechnical Specifications\u003c\/h3\u003e\n    \u003cdiv style=\"overflow-x: auto;\"\u003e\n      \u003ctable style=\"width: 100%; border-collapse: collapse; min-width: 600px;\"\u003e\n        \u003cthead\u003e\n          \u003ctr style=\"background-color: #16c8c8; color: white;\"\u003e\n            \u003cth style=\"padding: 12px; text-align: left;\"\u003eParameter\u003c\/th\u003e\n            \u003cth style=\"padding: 12px; text-align: left;\"\u003eTechnical Details\u003c\/th\u003e\n          \u003c\/tr\u003e\n        \u003c\/thead\u003e\n        \u003ctbody\u003e\n          \u003ctr style=\"background-color: #f4fcfc;\"\u003e\n            \u003ctd style=\"padding: 10px; border: 1px solid #eee;\"\u003e\u003cstrong\u003eModel Number\u003c\/strong\u003e\u003c\/td\u003e\n            \u003ctd style=\"padding: 10px; border: 1px solid #eee;\"\u003eKLT11DR230C (KLT11 Series)\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr style=\"background-color: #fafafa;\"\u003e\n            \u003ctd style=\"padding: 10px; border: 1px solid #eee;\"\u003e\u003cstrong\u003ePower Supply\u003c\/strong\u003e\u003c\/td\u003e\n            \u003ctd style=\"padding: 10px; border: 1px solid #eee;\"\u003e230V AC ±10%, 50\/60Hz\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr style=\"background-color: #f4fcfc;\"\u003e\n            \u003ctd style=\"padding: 10px; border: 1px solid #eee;\"\u003e\u003cstrong\u003eInput Type\u003c\/strong\u003e\u003c\/td\u003e\n            \u003ctd style=\"padding: 10px; border: 1px solid #eee;\"\u003ePTC \/ NTC (Selectable via parameters)\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr style=\"background-color: #fafafa;\"\u003e\n            \u003ctd style=\"padding: 10px; border: 1px solid #eee;\"\u003e\u003cstrong\u003eRelay Output\u003c\/strong\u003e\u003c\/td\u003e\n            \u003ctd style=\"padding: 10px; border: 1px solid #eee;\"\u003eSPDT 16A \/ 250V AC (Resistive Load)\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr style=\"background-color: #f4fcfc;\"\u003e\n            \u003ctd style=\"padding: 10px; border: 1px solid #eee;\"\u003e\u003cstrong\u003eMeasurement Range\u003c\/strong\u003e\u003c\/td\u003e\n            \u003ctd style=\"padding: 10px; border: 1px solid #eee;\"\u003e-50.0°C to +150.0°C (Sensor dependent)\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr style=\"background-color: #fafafa;\"\u003e\n            \u003ctd style=\"padding: 10px; border: 1px solid #eee;\"\u003e\u003cstrong\u003eAccuracy \/ Resolution\u003c\/strong\u003e\u003c\/td\u003e\n            \u003ctd style=\"padding: 10px; border: 1px solid #eee;\"\u003e±0.5% of Full Scale \/ 0.1°C\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr style=\"background-color: #f4fcfc;\"\u003e\n            \u003ctd style=\"padding: 10px; border: 1px solid #eee;\"\u003e\u003cstrong\u003ePanel Protection\u003c\/strong\u003e\u003c\/td\u003e\n            \u003ctd style=\"padding: 10px; border: 1px solid #eee;\"\u003eIP65 (Frontal)\u003c\/td\u003e\n          \u003c\/tr\u003e\n        \u003c\/tbody\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003c!-- Application \u0026 Reliability --\u003e\n  \u003csection style=\"margin-bottom: 30px;\"\u003e\n    \u003ch3 style=\"color: #0056b3;\"\u003eApplication \u0026amp; Industrial Reliability\u003c\/h3\u003e\n    \u003cp\u003e\n      The \u003cstrong\u003eKELD KLT11DR230C\u003c\/strong\u003e stands out for its robust software algorithms that prevent accidental parameter tampering through a password-protected menu. Its 16A relay allows for direct control of small compressors or heaters without the need for an external contactor in many cases.\n    \u003c\/p\u003e\n    \u003cul style=\"list-style-type: square; padding-left: 20px;\"\u003e\n      \u003cli\u003e\n\u003cstrong\u003eDual Functionality:\u003c\/strong\u003e Easily switch between Heating (H) and Cooling (C) modes via internal settings.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eDefrost Management:\u003c\/strong\u003e Includes programmable defrost intervals for refrigeration cycle optimization.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eSensor Offset:\u003c\/strong\u003e Professional calibration feature allows for correcting sensor discrepancies due to long cable leads.\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/section\u003e\n\n  \u003c!-- Koeed B2B Tool: Hysteresis \u0026 Relay Logic Simulator --\u003e\n  \u003csection style=\"margin-bottom: 30px; padding: 20px; background-color: #f0fafa; border-radius: 8px; border-left: 5px solid #16c8c8;\"\u003e\n    \u003ch3 style=\"color: #0056b3; margin-top: 0;\"\u003eKoeed FAE Tool: Relay Logic Simulator\u003c\/h3\u003e\n    \u003cp style=\"font-size: 0.9em;\"\u003eSimulate how the Set Point (SP) and Differential (d0) affect your output.\u003c\/p\u003e\n    \n    \u003cdiv style=\"margin-bottom: 15px;\"\u003e\n      \u003clabel style=\"display: block; font-weight: bold; margin-bottom: 5px;\"\u003eOperation Mode:\u003c\/label\u003e\n      \u003cselect id=\"keldMode\" style=\"width: 100%; padding: 8px; border: 1px solid #ccc; border-radius: 4px;\"\u003e\n        \u003coption value=\"cool\"\u003eCooling Mode (C)\u003c\/option\u003e\n        \u003coption value=\"heat\"\u003eHeating Mode (H)\u003c\/option\u003e\n      \u003c\/select\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"display: grid; grid-template-columns: 1fr 1fr; gap: 15px; margin-bottom: 15px;\"\u003e\n      \u003cdiv\u003e\n        \u003clabel style=\"display: block; font-weight: bold; margin-bottom: 5px;\"\u003eSet Point (SP):\u003c\/label\u003e\n        \u003cinput type=\"number\" id=\"keldSP\" value=\"5.0\" step=\"0.1\" style=\"width: 100%; padding: 8px; border: 1px solid #ccc; border-radius: 4px;\"\u003e\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003clabel style=\"display: block; font-weight: bold; margin-bottom: 5px;\"\u003eDifferential (d0):\u003c\/label\u003e\n        \u003cinput type=\"number\" id=\"keldDiff\" value=\"2.0\" step=\"0.1\" style=\"width: 100%; padding: 8px; border: 1px solid #ccc; border-radius: 4px;\"\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"margin-bottom: 15px;\"\u003e\n      \u003clabel style=\"display: block; font-weight: bold; margin-bottom: 5px;\"\u003eCurrent Temp Probe:\u003c\/label\u003e\n      \u003cinput type=\"range\" id=\"tempSim\" min=\"-10\" max=\"20\" step=\"0.1\" value=\"10\" style=\"width: 100%; cursor: pointer;\"\u003e\n      \u003cdiv style=\"text-align: right;\"\u003e\n\u003cspan id=\"simVal\" style=\"color: #16c8c8; font-weight: bold;\"\u003e10.0\u003c\/span\u003e °C\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv id=\"relayStatus\" style=\"padding: 15px; border-radius: 4px; text-align: center; font-weight: bold; transition: all 0.3s ease;\"\u003e\n      Relay: ACTIVE\n    \u003c\/div\u003e\n\n    \u003cscript\u003e\n      const mode = document.getElementById('keldMode');\n      const spIn = document.getElementById('keldSP');\n      const diffIn = document.getElementById('keldDiff');\n      const tempRange = document.getElementById('tempSim');\n      const simVal = document.getElementById('simVal');\n      const status = document.getElementById('relayStatus');\n\n      let relayState = false;\n\n      function updateLogic() {\n        const t = parseFloat(tempRange.value);\n        const sp = parseFloat(spIn.value);\n        const d0 = parseFloat(diffIn.value);\n        const isCool = mode.value === 'cool';\n        \n        simVal.innerText = t.toFixed(1);\n\n        if (isCool) {\n          if (t \u003e= sp + d0) relayState = true;\n          else if (t \u003c= sp) relayState = false;\n        } else {\n          if (t \u003c= sp - d0) relayState = true;\n          else if (t \u003e= sp) relayState = false;\n        }\n\n        if (relayState) {\n          status.innerText = \"RELAY: ON (Terminal 1-2 Closed)\";\n          status.style.backgroundColor = \"#e8f5e9\";\n          status.style.color = \"#2e7d32\";\n          status.style.border = \"2px solid #2e7d32\";\n        } else {\n          status.innerText = \"RELAY: OFF (Terminal 1-2 Open)\";\n          status.style.backgroundColor = \"#ffebee\";\n          status.style.color = \"#c62828\";\n          status.style.border = \"2px solid #c62828\";\n        }\n      }\n\n      [mode, spIn, diffIn, tempRange].forEach(el =\u003e el.addEventListener('input', updateLogic));\n      updateLogic();\n    \u003c\/script\u003e\n  \u003c\/section\u003e\n\n  \u003c!-- Troubleshooting FAQ --\u003e\n  \u003csection\u003e\n    \u003ch3 style=\"color: #0056b3;\"\u003eTroubleshooting FAQ\u003c\/h3\u003e\n    \u003cdiv style=\"margin-bottom: 15px;\"\u003e\n      \u003cp style=\"font-weight: bold; color: #16c8c8; margin-bottom: 5px;\"\u003eQ1: Display shows \"E1\" or \"---\" flashing?\u003c\/p\u003e\n      \u003cp style=\"margin-top: 0; font-size: 0.95em;\"\u003eThis indicates a probe error (short circuit or open circuit). Verify that the sensor type (PTC or NTC) in the configuration matches the physical probe connected to terminals 10-11.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"margin-bottom: 15px;\"\u003e\n      \u003cp style=\"font-weight: bold; color: #16c8c8; margin-bottom: 5px;\"\u003eQ2: Compressor short-cycling (turning on\/off too frequently)?\u003c\/p\u003e\n      \u003cp style=\"margin-top: 0; font-size: 0.95em;\"\u003eIncrease the \u003cstrong\u003ed0 (Differential)\u003c\/strong\u003e parameter. A narrow differential causes the relay to trigger on minor temperature fluctuations. Also, check parameter \u003cstrong\u003ec0\u003c\/strong\u003e for Minimum Stop Time to protect the motor.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"margin-bottom: 15px;\"\u003e\n      \u003cp style=\"font-weight: bold; color: #16c8c8; margin-bottom: 5px;\"\u003eQ3: The relay clicks but the load doesn't power on?\u003c\/p\u003e\n      \u003cp style=\"margin-top: 0; font-size: 0.95em;\"\u003eThe KLT11 provides a volt-free SPDT contact. Ensure you have wired the \"hot\" line through terminal 1 (Common) and out through terminal 2 (Normally Open) to your load. Terminals 8-9 only power the controller itself.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n\u003c\/div\u003e","brand":"KELD","offers":[{"title":"Default Title","offer_id":44467470172345,"sku":"274773916023","price":203.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/8476\/7929\/files\/s-l1600_2ebb640d-e5b7-4e7d-8802-ec62734e50f5.jpg?v=1726218353","url":"https:\/\/koeed.com\/pt\/products\/new-for-keld-klt11-klt11dr230c-ac220v-cooling-and-heating-16a-temperature-controller","provider":"KOEED","version":"1.0","type":"link"}