This digital temperature controller can be used for household freezers,water tanks,refrigerators,industrial chillers,boilers,steamers,industrial equipment and other temperature control applications ,easy to use and operate. Features:Mini temperature controller with large,clear LED display for easy readability.Supports switching modes between the mode of cooling and heating mode.Control temperature by setting temperature set value and difference value./> Support temperature calibration and delay protection refrigeration control output.Support alarm function when temperature exceeds temperature limit or sensor error,ensuring safety.at 99.Can be used for domestic freezers,water tanks,refrigerators,industrial chillers,boilers,steamers,industrial equipment and other temperature control applications temperature. P0 cooling and heating mode High temperature start is cooling mode,please set to C The start at low temperature in heating mode,please set to H P1 differential setting > In heating mode (H): measured value setpoint-return differential when heating output is started to stop at setpoint In cooling mode (C): measured value set value + feedback difference when output cooling is started to stop at set value P2 Maximum setting range: The maximum value when setting the temperature does not exceed this value P3 Minimum setting range: The minimum value when setting the temperature is not lower than this value P4 temperature correction When there is a deviation between the measured temperature and the standard temperature ,this can be used to correct,and the corrected temperature = the temperature before correction + the corrected value P5 delayed start time unit: minutes When controlling the cooling of compressor equipment,the delay time can be set as needed,and the device will not start immediately when the controller is pulled out,and it must be started after running the set delay time P6 high temperature alarm When the measured value is higher than this value --- the screen displays alarm and drip alarm,and the output is for disconnected Latch function P7 Turn on the data lock,you can keep the current setting unchanged,at this time,the temperature and the setting function are invalid,if you need to modify ,you must turn off the lock function data Factory reset P8 Long press SET to switch to P8,press SET once to activate,press Rst to restore factory settings You can also press and hold the +- key without releasing POST and factory reset Note: The data is all manual measurement,please allow some 1-3cm error; due to the difference in light and display,there would be a certain color difference,please refer to the actual object received.