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Title： W2020 Miniature Electronic Digital Display Smart Thermostat Temperature Controller Heating And Cooling Switch Constant Temperature 0.1 Accuracy

Product name: 

Intelligent digital display thermostat

 Power supply voltage:  DC12V/24V/AC220V
Output voltage:  equal to the supply voltage Output current:  maximum 10A
Maximum power:  12V/120W, 24V/240W, 220V/2200W Temperature control range:  -50℃-110℃
Control accuracy:  0.1℃ Refresh rate:  4 times/sec
Video size:  0.56 inch red three-digit digital tube Appearance size:  75x35x85mm
Product net weight: 165g    
Instructions for use : 1.Connect a matching 12V, 24V, 220V power supply at the input end, and connect a load with the same voltage as the input end at the output end.
2. After power on, the screen displays the real-time temperature, press the Set button to stop the temperature value starting to flash, you can press the up and down keys to adjust and set the temperature value you want to stop, and the setting is complete, press the enter key.
3. Long press the Set button to shut down, and the power off switch state machine and settings are automatically memorized and saved.
4. Press the Set key for 5 seconds to enter the internal function settings (P0-P8), and press the up and down keys at the same time to restore the factory settings.
5.Fault code: When the sensor fails, the temperature alarm screen will display LLL; the high temperature alarm screen will flash in real time and the buzzer will beep.
Description of internal function menu:

1.P0: cooling/heating mode: high temperature start is cooling mode, set to C; low temperature start is heating mode, set to H.
2.P1: Hysteresis setting: in heating mode (H): measured value ≤ set value-when the hysteresis starts to output heating to the set value and stops; in cooling mode (C): measured value ≥ set value + return Start the output cooling to stop at the set value at the time of difference.
3.P3: Minimum setting range: The minimum setting temperature cannot exceed this value.
4.P4: Temperature correction: When the measured temperature deviates from the standard temperature, you can use this function to correct, the temperature after correction = the temperature before correction + the correction value
5. P5: Delay start time: unit minute, when controlling the cooling of the compressor equipment, you can set the delay time according to your needs; when the controller outputs, the equipment will not start running immediately. It needs to run the set delay Start after some time.
6.P6: High temperature alarm: When the measured value is greater than this value, the screen temperature will flicker and beep, the heating mode is disconnected from the output, and the cooling mode is not disconnected.
7.P7: Data lock function: Turn on the data lock to keep the current setting unchanged. At this time, the set temperature and function are invalid. If you need to modify it, you need to turn off the data lock function.
8.P8: Restore factory settings: Long press SET to switch to P8, press SET once to set to ON, press Rst to restore factory settings, or press + and-keys at the same time for 3 seconds to restore the factory.
Package:

1*Smart digital display thermostat

On Apr-22-21 at 20:17:16 PDT, seller added the following information:

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