STC-9000 Microcomputer temperature controller Features: User menu and daministrator menu seperately set; temperature return difference setting; dual sensors; defrosting controlled by temperature; defrosting cycle calculated by accumulated compressor running time; enforced cooling and defrosting; temperature calibration; alarm and alarm cancel; compressor delay. Universal model. Size: Panel size: 75x34mm Installing size: 71x29mm Product size: 75x34.5x85mm Technical parameters: Power supply: 220VAC+/-10% (12V optional) Power consumption: <5W Temperature measuring and controlling range: -40~50C Resolution: 0.1 Accuracy:+/-1℃ Compressor delay time: 0-9 minutes adjustable Temperature calibration: -5~5℃ Defrosting cycle: 0-99 hours adjustable Defrosting time: 0-99 mimutes adjustable Compressor output contact capacity: 10A/240VAC Exceeding temperature limit alarm adjustable range: 0-20℃ Sensor: NTC Defrosting-end temperature: 0-35℃ adjustable visit our website and find our mail contact.