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 temperature Blue digital tube: set temperature Button plus: Increase the set temperature Button minus: Decrease the setting temperature Restore factory settings: Pre and hold the button plus button for more than 5s at the same time, the system will restore the original settings data. Set button (SET): 1. Short pre SET, set the temperature to add 50 C each time, the user can quickly pre SET to quickly set to the vicinity of the preset temperature value, and then fine-tune to the preset temperature by preing the button. 2. Pre 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, pre SET shortly to switch P00~P05. Under the corresponding parameters, the corresponding data is added or subtracted by preing 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 mode P01: 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: AC 220V; DC 5V; 12V; 24V Output: 10A relay Temperature control range: -60~500 Temperature accuracy: 1 Resolution: 0.1 Refresh rate: 0.5S Shell material: ABS Dimensions: 79x43x26mm/3.11x1.69x1.02inch Installation size: 74x39mm/2.91x1.54inch Cable length: 42cm Note: 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 included: 1 x Digital Temperature Controller 1 x K-type M6 Thermocouple