Features: _x000D_ This temperature controller is designed with dual-color LED display and has high precision of 0.1. _x000D_ _x000D_ It supports temperature correction, temperature alarm and delayed start function._x000D_ _x000D_ Designed with screw terminals for convenient and easy wiring._x000D_ _x000D_ Water-resistant probe has higher sensitivity, sealed with silicone, more suitable for liquid temperature detection, safe and durable._x000D_ _x000D_ Widely used for temperature control in cabinets, industrial equipment, vegetable and flower greenhouses, etc. _x000D_ _x000D_ _x000D_ Specifications: _x000D_ Control Range -50~110 _x000D_ Control Precision 0.1 _x000D_ Sensor Input NTC10K water-resistant sensor L=0. 5M _x000D_ Temperature Alarm -49~110 _x000D_ Input Voltage DC12V _x000D_ Output Type Relay output max. 10A _x000D_ Return Difference Set_x000D_ 0.1~30 _x000D_ Delay Start 0~10minutes _x000D_ Temperature Correction -10~+10 _x000D_ Red Display_x000D_ Measured Temperature_x000D_ _x000D_ Green Display_x000D_ Setting Temperature_x000D_ _x000D_ _x000D_ _x000D_ _x000D_ Instruction: _x000D_ K0 K1 Terminal:_x000D_ Thermostat output type is relay output, K0 and K1 is equivalent to a extension relay switch; 12V power supply powers the thermostat, sensor detects temperature, internal temperature control program control relay output and load (if the load is powered by AC power supply, it is safer to connect K0 and K1 to live wire) _x000D_ Code Function Setting Range Default _x000D_ P0 Temperature Control Mode H(hot)/C(cold) C _x000D_ P1 Return Difference Setting 0.1~30 2 _x000D_ P2 Temperature Correction -10~10 0 _x000D_ P3 Delay Start 0~10 (min.) 0 _x000D_ P4 Temperature Alarm -49~110 110 _x000D_ _x000D_ "SET" Button: Set switch_x000D_ "+" Button: Increase temperature_x000D_ "-" Button: Reduce temperature_x000D_ Restore to Factory Settings: Power on, press and hold "+" and "-" buttons together for about 3 seconds. _x000D_ P0 Temperature Control Mode:_x000D_ This parameter must be set for first time using controller. If used for heating, set it as H; if used for cooling, set it as C._x000D_ P1 Return Difference:_x000D_ Press and hold SET button to enter internal setting, select P1 setting, press the SET button again to set return difference value. (Return difference value is the value that controller restarts after it reached set temperature and stopped. For example, if we use heating mode, make controller stops at 40 and restart at 35, the return difference value is 5)_x000D_ P2 Temperature Correction:_x000D_ This function is used for temperature correction, if there is a deviation between measured temperature and real temperature. Correcting Temperature= Measured Temperature + Correction Value. _x000D_ For example, if the measured temperature is 25.6 degrees and the actual temperature is 25.8 degrees, set P4 as 0.2, so the final temperature is 25.6 + 0.2 = 25.8 degrees_x000D_ P3 Delay Start:_x000D_ This function is normally used for compressor refrigeration. If controller is used in refrigerator freezers, this value must be set. According to back pressure of compressor, this value can be set between 3 and 6 minutes. If you don't use it to control compressor or don't need delay function, you can ignore it._x000D_ P4 Temperature Alarm:_x000D_ Set temperature alarm value, when the real-time temperature exceeds this value, the display will flash to alarm._x000D_ _x000D_ Heating mode setting example:_x000D_ Control electric heating equipment to stop heating at 35, and restart when temperature is down to 30;_x000D_ 1, Press and hold SET button for 3 seconds to enter internal setting, set P0 as H._x000D_ 2, Press and hold SET button to return to the real-time temperature display, press SET button again and the green display flashes, then adjust the value to 35._x000D_ 3, The default return difference is 2, it need to be set as 5 if want to restart at 30. Press and hold SET button to enter internal setting, select P1, change P1 value to 5. _x000D_ _x000D_ _x000D_ Cooling mode setting example:_x000D_ Control air conditioning refrigeration to stop cooling at 23, and restart when the temperature is up to 27;_x000D_ 1, Press and hold SET button for 3 seconds to enter internal setting, set P0 as C._x000D_ 2, Press and hold SET button to return to the real-time temperature display, press SET button again and the green display flashes, then adjust the value to 23._x000D_ 3, The default return difference is 2, it need to be set as 4 if want to restart at 27._x000D_ Press and hold SET button to enter internal setting, select P1, change P1 value to 4. _x000D_ _x000D_ _x000D_ Package Includes: _x000D_ 1 x Temperature Controller