Features: Mini and powerful: The mini temperature controller can both control heating and cooling with a wide temperature measuring range from -55C to 120C. Clear LED display: with red displays and blue 2 colors, it is easy to distinguish and more practical for better readability. Precision Contral: This controller with 0.1 centigrade control precision, high control precision is suitable for household freezer, water tanks, etc. Safe and reliable: Relay output. All parameters can be saved after a short circuit. Widely Application: Can be used for household freezer, water tanks, refrigerator, industrial cooler, steam appliance, industrial and other equipment, temperature controlled system. Features: Material: ABS Black color Power supply: 12VDC / 24VDC / 110-220VAC (optinal) Temperature control range: -55C to 120C Resolution ratio: 0.1C (-9.9 to 99.9); 1C (other range) Display color: red / blue Measurement accuracy: 0.1C Control accuracy: 0.1 C Sensor: Waterproof NTC10K sensor Output: relay contact capacity 10A/220V, 20A/12V Environmental requirements: -10-60C, relative humidity 20% -85% Dimension: 79 * 43 * 26mm / 3.1 * 1.7 * 1.0" Cutting size: 73 * 39mm / 2.9 * 1.5" Item Weight: 43g / 1.5oz Package Weight: 50 g Package size: 80 * 45 * 30mm / 3.1 * 1.8 * 1.2" Package List: 1 * Temperature Controller