brand new and high quality Features:The product has a total of four buttons, button plus, button minus, SET (setting button), reset button. There are two sets of digital tubes showing the actual temperature and the set temperature respectively. All parameters are automatically remembered after 5 seconds of setting.Operation use:Red digital tube: actual temperatureBlue digital tube: set temperatureButton plus: Increase the set temperatureButton minus: Decrease the setting temperatureRestore factory settings: Press and hold the button plus button for more than 5s at the same for time, the system will restore the original settings data.Set button (SET):1. Short press SET, set the temperature to add 50 C each for time, the user can quickly press SET to quickly set to the vicinity of the preset temperature value, and then fine-tune to the preset temperature by pressing the button.2. Press and hold SET to enter the parameter setting options. There are several parameters of P00~P05 for the user to set. After entering the parameter interface, press SET shortly to switch P00~P05. Under the corresponding parameters, the corresponding data is added or subtracted by pressing the button, and the automatic memory data is returned to the display interface after the system is completed for 10 seconds.Code Cable:P00: H heating mode / C cooling modeP01: Temperature difference backlash (0~500)P02: Temperature correction(-10~10)P03: Maximum temperature alarm value (500)P04: Minimum temperature alarm value (-60)P05: Data lock (ON/OFF) Specification:Voltage: DC12VOutput: 10A relayTemperature control range: -60~500Temperature accuracy: 1Resolution: 0.1Refresh rate: 0.5Sfor Shell material: ABSDimensions: 79x43x26mm/3.11x1.69x1.02inchInstallation size: 74x39mm/2.91x1.54inchCable length: 42cmColor: BlackQuantity: 1 SetNote: 1.Please allow 0-2mm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes:1 x Digital Temperature Controller1 x K-type M6 Thermocouple