The 12V W3230 Temperature Controller features a clear LED display, wide temperature measuring range, heating or cooling control, high precision and can be used for various temperature control systems. Its parameters can be easily set and saved. Ideal for home freezers, water tanks, refrigerators, industrial chillers, vaporizers and more. Features 1. Mini thermometer.With clear LED display for better readability. 2. Wide temperature measuring range.Heating or cooling control. 3. All parameters setting can be saved after short circuit. 4. Relay output.High Control precision 0.1 centigrade 5. It can be used for home freezers, water tanks, refrigerators, industrial chillers, vaporizers, industrial equipment and other temperature control systems. Specification Material: ABS Color: Black Package Includes: 1 x Digital Temperature Controller