Features: Switch the modes between cool and heat; Control temperature by setting the temperature setting value and the difference value; Temperature calibration; Refrigerating control output delay protection; Alarm when temperature exceeds temperature limit or when sensor error. All parameters setting can be saved when power off. Can be used for domestic freezer, water tanks, refrigerator,industrial chiller, steamer, industrial equipment and other temperature control applications. Technical Parameters: 1.Temperature measuring range: -50 ° C 99 ° C 2.Resolution: 0.1 ° C; 3.Accuracy:+- 1° C (-50 ° C 70 ° C); 4.Sensor error delay: 1 minute 5.Power supply: AC 110-220V 50/60Hz, DC 12V, DC 24V,( Choose power supply when you place order ) ; 6.Power consumption: 3W; 7.Sensor: NTC sensor (1PC); 8.Relay contact capacity: Two Relay Cool 10A/220VAC; Heat 10A/220VAC; 9.Ambient temperature: 0 ° C 60 ° C; 10.Storage temperature: -30 ° C 75 ° C; 11.Relative humidity: 20% 85% (No condensate) Product Name: LED Digital Thermotast Size: 7cm x 7cm x 5cm Model: DC12V,DC24V,AC110-220V Color: As shown Weight: About 78g Package included: 1PC LED Digital Thermotast (Without White Box) Notice: Due to the display, the actual color of the product may be a little different.