Reliable Performance for Long Life: Mainly made of quality plastic, the temperature relay switches are compact and robust in structure, not easy to break, can keep water out, and therefore serve you for a long time; The temperature control units are equipped with stainless steel probes, hardly rust, and have good working performance. 2 Modes for Flexible Use: There are 2 working modes for the digital temperature controller, one is the heating mode, the other is the cooling mode; The temperature can be changed from minus 50 degrees Celsius to 110 degrees Celsius, and the temperature control accuracy can reach 0.1 degrees Celsius, so you can adjust the temperature controller according to your actual needs. Satisfying Practical Use in Various Occasions: The freezer temperature regulators have a wide range of applications; You can use them to improve your air conditioning system, cooling system, incubation zone, equipment cooling efficiency, and so on. Smart LED Display for Easy Reading: Inserted with reliable LED screens, the refrigerator temperature controls can clearly show the operating temperature, making it convenient for you to read and adjust the temperature in time. Sufficient Quantity for Replacement and Use: You will receive 3 pieces of thermostat fan control switches, enough for you to replace your broken ones, bringing you lots of convenience; You can also share some of them with your friends to show your generosity. Color: As shown. Material: plastic. Package Contents: 3 x LED Thermostat Switch. Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.