{"product_id":"12v-dc-refrigerator-temperature-controller","title":"12V DC Refrigeration Temperature Controller with Auto Defrost \u0026 Compressor Delay | YeloDeer","description":"\u003ch3 class=\"isSelectedEnd\"\u003e\u003cspan\u003eOverview\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e12V DC Temperature Controller for Refrigeration \u0026amp; Cooling Applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe YeloDeer STC-201 is a compact microcomputer temperature controller designed for 12V DC refrigeration and cooling control systems. It is built for applications that need stable temperature control, compressor protection, defrost control, and easy temperature adjustment in a low-voltage DC setup.\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003eThis controller is suitable for RV refrigerators, camper cooling systems, small freezers, portable coolers, beverage coolers, display cabinets, cold storage cabinets, and DIY low-voltage refrigeration projects.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003eIt supports:\u003cbr\u003e\u003c\/strong\u003e\u003cspan\u003eTemperature control for cooling systems\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCompressor delay protection\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eAutomatic defrost control\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eManual defrost control\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eHigh and low temperature alarm settings\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e°F \/ °C display switching\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eAuto-lock function to help prevent accidental setting changes\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eNTC temperature sensor input\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 class=\"isSelectedEnd\"\u003e\u003cspan\u003eWhy Choose This Controller?\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003eChoose this 12V DC temperature controller if you need:\u003cbr\u003e\u003c\/strong\u003e\u003cspan\u003eA compact controller for RV refrigerator or camper cooling projects\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eA controller for small freezer, portable cooler, or beverage cooler systems\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCompressor output control with delay protection\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eDefrost output control for frost management\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eAdjustable alarm settings for high or low temperature conditions\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eA Fahrenheit-default controller with °F \/ °C switching\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eA low-voltage controller for DIY refrigeration builds\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 class=\"isSelectedEnd\"\u003e\u003cspan\u003eImportant Before You Order\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003ePlease confirm the following before purchase:\u003cbr\u003e\u003c\/strong\u003e\u003cspan\u003eYour system uses 12V DC power.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eDo not connect this controller to AC power.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eYour compressor, fan, defrost heater, or connected load is compatible with the relay output.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eThe 30A and 10A relay ratings are resistive load ratings. Actual allowable working current may be lower for inductive loads such as compressors, motors, or fans.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eProper circuit protection should be used according to your system design.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eThis product is intended for general temperature control applications only. It is not intended for life-support, medical compliance, or other critical storage applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 class=\"isSelectedEnd\"\u003e\u003cspan\u003eApplications \u0026amp; Compatibility\u003c\/span\u003e\u003c\/h3\u003e\n\u003ch4 class=\"isSelectedEnd\"\u003e\u003cspan\u003eRecommended Applications\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003eThis 12V DC temperature controller is suitable for:\u003cbr\u003e\u003c\/strong\u003e\u003cspan\u003eRV refrigerators\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCamper cooling systems\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eSmall freezers\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003ePortable cooling boxes\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eBeverage coolers\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eDisplay cabinets\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCold storage cabinets\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eFruit and vegetable fresh-keeping cabinets\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eMushroom cultivation or growing chambers\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eDIY low-voltage refrigeration systems\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eOther 12V DC cooling control applications\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 class=\"isSelectedEnd\"\u003e\u003cspan\u003eCooling System Compatibility\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThis controller is designed for cooling and refrigeration control. It turns the cooling output on when the detected temperature rises above the set control range, and turns the cooling output off when the target temperature is reached.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003eTypical use cases include:\u003cbr\u003e\u003c\/strong\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003e\u003c\/span\u003e\u003cspan\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan\u003e12V DC compressor cooling systems\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003eLow-voltage refrigerator control projects\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eSmall freezer temperature control\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003ePortable cooling system upgrades\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCooling cabinets with defrost needs\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 class=\"isSelectedEnd\"\u003e\u003cspan\u003eDefrost Compatibility\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe STC-201 includes a separate defrost output for systems that require defrost control. It supports both automatic defrost cycles and manual defrost operation.\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003eAutomatic defrost can be set by cycle interval and duration. Manual defrost can be used when frost or ice buildup appears before the next automatic cycle, or when maintenance and troubleshooting are needed.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 class=\"isSelectedEnd\"\u003e\u003cspan\u003ePlease Check Before Use\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003eThis product may not be suitable for:\u003cbr\u003e\u003c\/strong\u003e\u003cspan\u003eAC-powered systems\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eSystems requiring medical-grade temperature compliance\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eLife-support or critical storage applications\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eLoads that exceed the relay capacity\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eInstallations without proper fuse, circuit protection, or wiring safety\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eHigh-humidity, corrosive, or strong electromagnetic interference environments\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIf you are not sure whether this controller is suitable for your system, please send your power supply, load type, wiring plan, and application details to \u003c\/span\u003e\u003ca href=\"mailto:yelodeer@yelodeer.com\"\u003e\u003cspan\u003eyelodeer@yelodeer.com\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e before ordering.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 class=\"isSelectedEnd\"\u003e\u003cspan\u003eSpecifications \u0026amp; Sizing\u003c\/span\u003e\u003c\/h3\u003e\n\u003ch4 class=\"isSelectedEnd\"\u003e\u003cspan\u003eKey Specifications\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003e\u003cstrong\u003eProduct Type: \u003c\/strong\u003e12V DC microcomputer temperature controller\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003cstrong\u003eModel: \u003c\/strong\u003eSTC-201\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003cstrong\u003ePower Supply: \u003c\/strong\u003e12V DC\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003cstrong\u003eSensor Type: \u003c\/strong\u003eNTC sensor\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003cstrong\u003eTemperature Display Range: \u003c\/strong\u003e-50°C to 120°C \/ -58°F to 248°F\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003cstrong\u003eTemperature Control Range: \u003c\/strong\u003e-40°C to 20°C \/ -40°F to 68°F\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003cstrong\u003eOperating Ambient Temperature: \u003c\/strong\u003e-10°C to 60°C \/ 14°F to 140°F\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003cstrong\u003eWorking Humidity: \u003c\/strong\u003e≤80% RH, non-condensing\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003cstrong\u003eCompressor Output Relay Rating: \u003c\/strong\u003e30A, resistive load\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003eDefrost Output Relay Rating: \u003c\/strong\u003e10A, resistive load\u003cbr\u003e\u003cspan\u003e\u003cstrong\u003eDefault Temperature Unit: \u003c\/strong\u003e°F\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003cstrong\u003eTemperature Unit Switching: \u003c\/strong\u003e°C \/ °F adjustable\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003cstrong\u003eMain Functions: \u003c\/strong\u003eCooling control, compressor delay, automatic defrost, manual defrost, high\/low temperature alarm, temperature calibration, key lock\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 class=\"isSelectedEnd\"\u003e\u003cspan\u003eImportant Load Note\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe 30A compressor output and 10A defrost output ratings refer to relay contact ratings under resistive load conditions.\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003eIf connecting inductive loads such as compressors, motors, or fans, the actual allowable working current may be lower. Always confirm the load specifications before installation and use proper circuit protection.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 class=\"isSelectedEnd\"\u003e\u003cspan\u003eKey Adjustable Functions\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003eTemperature Differential (F1): \u003c\/strong\u003e\u003cspan\u003eAdjusts the gap between cooling start and stop temperatures to balance temperature stability and compressor cycling.\u003cbr\u003e\u003c\/span\u003e\u003cstrong\u003eCompressor Delay (F4): \u003c\/strong\u003e\u003cspan\u003eAdds a restart delay to help protect the compressor from rapid cycling.\u003cbr\u003e\u003c\/span\u003e\u003cstrong\u003eTemperature Calibration (F5): \u003c\/strong\u003e\u003cspan\u003eFine-tunes the displayed temperature for improved accuracy.\u003cbr\u003e\u003c\/span\u003e\u003cstrong\u003eAutomatic Defrost (F6–F7): \u003c\/strong\u003e\u003cspan\u003eSets the defrost interval and defrost duration for systems that require frost management.\u003cbr\u003e\u003c\/span\u003e\u003cstrong\u003eHigh \/ Low Temperature Alarms (F9–F12): \u003c\/strong\u003e\u003cspan\u003eProvides adjustable alarm settings to notify users when temperatures move outside the desired range.\u003cbr\u003e\u003c\/span\u003e\u003cstrong\u003e°C \/ °F Switching (F13): \u003c\/strong\u003e\u003cspan\u003eAllows the display to be shown in either Celsius or Fahrenheit.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003eImportant Unit Note: \u003c\/strong\u003e\u003cspan\u003eTemperature values are not automatically converted when switching between °C and °F. After changing the temperature unit, verify and adjust your temperature settings if needed.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 class=\"isSelectedEnd\"\u003e\u003cspan\u003eInstallation \u0026amp; Accessories\u003c\/span\u003e\u003c\/h3\u003e\n\u003ch4 class=\"isSelectedEnd\"\u003e\u003cspan\u003eQuick Installation Notes\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003eBefore ordering, please confirm:\u003cbr\u003e\u003c\/strong\u003e\u003cspan\u003e• Your system uses 12V DC power only\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Your cooling system requires compressor control and optional defrost control\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Your connected load does not exceed the relay capacity\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• You have basic DC wiring knowledge or access to a qualified installer\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003eImportant:\u003cbr\u003e\u003c\/strong\u003e\u003cspan\u003e• Do NOT connect this controller to AC power\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Disconnect power before wiring\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Use proper fuse and circuit protection for your system\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 class=\"isSelectedEnd\"\u003e\u003cspan\u003eSensor Placement Tips\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003eFor accurate temperature control:\u003cbr\u003e\u003c\/strong\u003e\u003cspan\u003e• Place the sensor inside the refrigerated area you want to monitor\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Keep it away from fans, vents, heaters, compressors, or evaporators\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Avoid mounting near doors or frequently opened areas\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Secure the sensor so it cannot move during operation\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eProper sensor placement helps improve temperature accuracy and reduces unnecessary compressor cycling.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 class=\"isSelectedEnd\"\u003e\u003cspan\u003eBasic Operation\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003eSet Temperature\u003c\/strong\u003e\u003c\/p\u003e\n\u003col start=\"1\"\u003e\n\u003cli\u003e\u003cspan\u003ePress SET\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eUse ▲ or ▼ to adjust the target temperature\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSave and exit\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003eDefrost Control\u003cbr\u003e\u003c\/strong\u003e\u003cspan\u003e• Automatic defrost can be scheduled using the controller settings\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Manual defrost can be activated when frost buildup occurs before the next scheduled cycle\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eFAQ \u0026amp; Resources\u003c\/h3\u003e\n\u003ch4\u003eFrequently Asked Questions\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003e1. Is this controller for cooling or heating?\u003cbr\u003e\u003c\/strong\u003eThis model is designed for refrigeration and cooling applications only.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e2. Can I use it with AC power?\u003cbr\u003e\u003c\/strong\u003eNo. This controller works with 12V DC power only.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e3. Does it support automatic defrost?\u003cbr\u003e\u003c\/strong\u003eYes. It supports both automatic defrost and manual defrost functions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e4. Can I switch between Fahrenheit and Celsius?\u003c\/strong\u003e\u003cbr\u003eYes. The display can be switched between °F and °C.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e5. What applications is it suitable for?\u003cbr\u003e\u003c\/strong\u003eCommon applications include:\u003cbr\u003e• RV refrigerators\u003cbr\u003e• Camper refrigeration systems\u003cbr\u003e• Small freezers\u003cbr\u003e• Beverage coolers\u003cbr\u003e• Portable cooling boxes\u003cbr\u003e• Display refrigerators\u003cbr\u003e• DIY 12V DC refrigeration projects\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e6. What should I check before purchasing?\u003cbr\u003e\u003c\/strong\u003ePlease confirm:\u003cbr\u003e• Your power supply is 12V DC\u003cbr\u003e• Your load is compatible with the relay output\u003cbr\u003e• The controller's temperature range meets your application requirements\u003cbr\u003e• You need cooling control rather than heating control\u003c\/p\u003e","brand":"YeloDeer","offers":[{"title":"Default Title","offer_id":48324596105457,"sku":"Y-201-1pc","price":14.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0701\/2836\/9905\/files\/201_1.png?v=1781689047","url":"https:\/\/yelodeer.com\/products\/12v-dc-refrigerator-temperature-controller","provider":"YeloDeer","version":"1.0","type":"link"}