Buttons: P0 :Cooling / Heating; Range: C/H; Default: C P1 :Hysteresis Setting; Range:0.1-15; Default: 2 P2 :Highest Setting Limit; Range:110; Default: 110 P3: Lowest setting Limit; Range:-50; Default: -50 P4 :Temperature Correction; Range:-7-7c; Default: 0c P5: Delay Start Time; Range:0-10 Minute; Default: 0 P6: High temperature alarm; Range:0-110; Default: Off When the Thermostat is power off, long press - or +, you can restore the factory settings Package Included: 1 x XH-W1209 thermostat temperature controller incubator NTC Sensor incubation Instructions for use: Connect the power supply and equipment, the measuring temperature is displayed, press the SET button, press + or to set the desired temperature (long press + or to quickly increase or decrease), press SET to confirm the setting and return, controller automatically performs the relay ON/OFF. the thermostat output is 10A relay, meet a variety of high-power loads, LED Indicator: LED off indicates the relay off; Lighting, indicates the relay is closed. Digital LED Tubes: LL indicates sensor open, HH indicates over range, the relay will be forcibly disconnected; indicates high temperature alarm Long press the SET button to enter the main menu settings, press + or to switching between P0-P6,then long press SET or 10 seconds without keystrokes to confirm the setting and return.