Features: The upper number displays actual temperature, and the lower displays setting temperature. When the actual temperature is higher than the setting temperature, the temperature controller brackovers, and conversely, it disconnects. strictly according to connection and the positive and negative pole on manual Style: Standing Station : Temperature Controller Display Type: Digital Usage: Industrial Specifications: Model Number: W2809 Max Measuring Temperature: 100C - 119C Temperature measurement range: -50C - 110C Resolution: 0.1(-9.9-99.9); 1(other temperature range) Measurement accuracy: 0.1C Control accuracy: 0.1C Return difference accuracy: 0.1C Refresh rate: 0.5S Temperature protection: 0-110C Input voltage: DC12V Measuring inputs: NTC(10K0.5%)Waterproof type sensor Output: 20A relay Environmental requirements: -10-60C , humidity 20% -85% Hole size: 46x26.5mm Power consumption: Static current: less than 35MA,attract current: less than 65MA Power supply: 12V 200MA Material:plastic colour:As Shown Package Contents: 1 x Temperature Controller Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.