This mini temperature controller regulates the temperature by setting the temperature value and the different value. Double heating and cooling function. Automatic over-temperature alarm. This temperature controller is an excellent and practical multi-function device for controlling temperature in farms, greenhouses, refrigeration room Temperature stability is one of the key factors contributing to health and safety animals or vegetablesTouch switch mode and 0.1°C accuracy, strict temperature controlThis advanced temperature controller can measure and control temperature from -55 to 120°C(Only Celsius, no Fahrenheit)This controller is a intelligent serial temperature controller. It is used for temperature control which requires automatic cooling and heating switch. It has the functions as below: temperature measurement, display and control; temperature calibration; lighting control; temperature sensor probe; a key to restore factory default settings and key lock.Specifications:-Model: STC-3000-Type (optional): 110-220V10A, 110-220V30A-Working principle: electronic and digital thermostat-Power: AC220V10A, AC220V30A - Thermostat temperature range: -55℃~120℃/-67~248℉-Size: 85 × 35 × 65 mm-Weight: 121g, 136g Package Contents:1 × Temperature Controller Note: The data are all manual measurement, please allow 1-3cm error, due to the difference in light and temperature. display, there will be some color difference, depending on the physical item received.