Check the listing for details. AC 220V 2000W Digital Temperature Controller Thermostat Thermoregulator. Condition: New. Listed at 16.84 USD. Technical parameters:Power: 50Hz AC220VThe maximum load power: 2000WTemperature control working temperature: 0 ~40℃Temperature measurement range: -35 ~55℃Refrigeration temperature control range: -30 ~38℃Thermal control range: +5 ~45℃Return difference temperature: ±1℃Temperature accuracy: ±1℃Sensor exchange accuracy: R:10K Ω±1% , B:3470 ± 1%Probe length 2.5 meters.Size:11.5x6.5x2.6cm(LxWxH)Operating instructions1, powerThe controller is connected to the power supply, the temperature control device is self check, the digital tube is full, the indicator light is bright. The default setting value of the factory is 25, the setting value is 5 andthe working state is heated.2, Indicator lightYellow light on the panel said the heating mode, the green light means that the cooling mode, red light means that the heating or refrigeration operation, red light means that the current temperature has reached the set temperature requirements.3,Temperature setting -setting key: switching between normal operation and temperature setting.-up key: used to raise temperature. - down key: used to reduce the setting temperature.4. State switchingPress and hold the middle down key for more than 4 seconds to switch between cooling and heating without releasing it. After switching, the corresponding indicator lights upTemperature setting1) Setting key: used to switch between normal operation and temperature setting.Press the setting button once, the nixie tube flashes and enters the temperature setting state(the heating and cooling temperatures are set separately, and do not share the same temperature setting value). At this time, press the up or down key to set the temperature until the temperature value you need. Press the settingbutton again, the digital tube stops flashing, saves the set temperature and returns to the normal operating state.In the temperature setting state, without pressing any key within 5 seconds, the thermostat will automatically savethe current set temperature and return to the running state.2) Up key: used to increase the set temperature.In the setting state, each time you press this key, the set temperature rises by 1°C. Press and hold thiskey to increase continuously until the upper limit of heating or cooling temperature (the upper limit of heating and cooling temperature control is different).3) Down key: used to lower the set temperature.In the setting state, each time you press this key, the set temperature decreases by 1°C. Press and hold this key to continue to decrease until the lower limit of heating or cooling temperature (the lower limit of heating and cooling temperature control is different).【Working mode】:Refrigeration: when the control temperature is more than or equal to the settemperature + 1 DEG C, switch on a load power supply; when thetemperature is less than or equal to control set temperature - 1 DEG C,cut off the power supply of the load.Heating: when the control temperature is more than or equal to the set temperature + 1 DEG C, cut off the power supply of the load; when the temperature is less than or equal to control set temperature - 1 DEG C,switch on the power supply of the load.【Fault protection function】1. When the sensor is short-circuited, the digital tube displays [dd], enters the fault operation mode, andimmediately exits the fault operation mode after the sensor returns to normal.2. When the sensor is open, the digital tube displays [---], enter the fault operation mode, and immediatelyexit the fault operation mode after the sensor returns to normal.3. Fault running mode: work 10 minutes, stop 20 minutes【Power-off memory function】After the power is powered off, the power is restored, and the controller operates according to the last set temperature memorizedPackage include:1xDigital temperature controller