Features: Stable performance, supports long time use. High accuracy and wide measuring range. With 3-digit Led display, extremely bright. Waterproof NTC probe allows to control the temperature even of fluids. Support cooling/heating control function. Specifications: Model: W1209 Input: 12v, 24v (optional) Output: 10A Temperature Control Range: -50 celsius ~110 celsius Temperature Measurement Accuracy: 0.1 celsius Control Accuracy: 0.1 celsius Temperature Sensor: NTC 10K High Temperature Protection: 0 celsius ~110 celsius Working Environment: Temperature: -10 celsius ~60 celsius Humidity: 20%~85% Item Size: 48 * 40mm / 1.89 * 1.57in? Package Size: 50 * 40 * 25mm / 1.97 * 1.57 * 0.98in Package Weight: 22g / 0.78ounces? 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 * Probe