STC-3000 Digital Temperature Switch Controller ℃ ℉ Display Heating Cooling Relay NTC Sensor Temp Control Thermostat for Freezer Fridge Hatching Features: High accuracy and wide measuring range. Stable performance, supports long time use. With large and clear display for better readability. Easy to set. Supports °F  and ℃ display. Can control both heating and cooling output. Has an alarm to indicate sensor failure or high temperature. Snap-it design, easy to install, no need for screws.  Applied to plant oil stove, hatching device, refrigerator and so on. Specifications: Model: STC-3000  Material: ABS Voltage: 12v 24v, 220v (optional) Measurement range: -50℃~99℃ / -58℉~200℉ Precision: 0.1℃ Measuring accuracy: ±1℃ (-50℃~70℃)  Power: <3W Sensor: NTC sensor  Environmental temperature: 0~60℃ Relative humidity: 20~85% Item size: 85 * 75 * 34.5mm / 3.35 * 2.95 * 1.36in   Package size: 130 * 90 * 80mm / 5.12 * 3.54 * 3.15in  Package weight: 120~130g / 4.23~4.58ounces  Note: 1.Due to the different display screen and light effect, the actual color of the item might be slightly different from the color showed on the pictures. 2.Please allow a little measuring deviation due to manual measurement. Package List: 1 * Digital Temperature Controller 1 * Sensor 1 * User Manual