1. Temperature setting (ambient temperature required by the user): the user can adjust it on the thermostat or APP, the adjustment range is -40 to 999 Celsius2. Temperature difference setting: set the difference between the heating and cooling target temperature when working at a constant temperature for example, the target temperature is 40 Celsius, the temperature difference is set to 2 Celsius, stop heating after heating to 40 Celsius, and enter the constant temperature mode , When the temperature drops to 38 Celsius, re-enter the heating mode, this value differs by 2 Celsius, this value can be adjusted by the host or APP3. Compressor delay: This function is generally used for compressor refrigeration. If the temperature controller is used for refrigerator freezer, this value must be set. The general setting value is 3-6 minutes according to the back pressure of the compressor. APP to adjust, the adjustment range is 0 to 10 minutes4. Temperature correction: used to correct the temperature value currently detected by the thermostat, the correction range is 0 to 10 degrees CelsiusProduct name: ThermostatProduct model: DTC1201 supply voltage: AC 110 -230VTemperature range: -40Celsius -99CelsiusTemperature measurement accuracy: 1Celsius (-40Celsius -70Celsius)Sensor cable length: 100cmSensor cable type: NTCSize: 93mm x 56mm x 34mmOutput capacity: cooling (10A or 250VAC) heating (10A or 250VAC)Indicator status:Cool indicator (Cool and Heat indicators cannot be on at the same time):On: cooling workOff: cooling offFlashing: Press delayHeat indicator:On: heating workOff: heating offSet indicator:On: parameter setting statusData indicator (yellow light: distribution network indicator):Data transmission indicatorNet indicator (indicating whether the APP is successfully connected to the device):On: onlineBlinking: offlineCaveat: This thermostat is forbidden to be used in water or excessively humid environment. It is prohibited to use in high temperature, strong electromagnetic interference and strong corrosive environment.State of Assembly: -to-Gocolour:BlackandwhiteMaterial:plasticPackage Contents:1 x Wireless digital temperature controller1 x Temperature sensor cableOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.