Item Type: Digital Temperature Controller <br>Material: Plastic <br>Color: As Picture Shown <br>Product Fixing Hole Distance: Approx. M3/86mm/3.4in <br>Weight: Approx. 58.0g/2.0oz <br>Temperature Control Range: 0-300℃ <br>Control Temperature Accuracy: 1℃ <br>Power Supply Voltage: 220V <br>Data Storage: Yes <br>Relay: 10A <br>How to use: <br>1. Confirm the working mode and hold down SET for 3 seconds to display PO, press SET again to modify the PO value, H is heating mode, C is cooling mode <br>2. Set hysteresis value: Hysteresis is to start after the set temperature is stopped and the hysteresis value is added. The default is 2℃. If you need to modify it, please press and hold SET to enter P1 to modify. <br>3. Set stop temperature: After setting the mode and hysteresis, directly press ENT to confirm and return. At this time, the screen displays the real-time temperature. Press a SET screen to display the stop temperature value, and then press the up and down keys to modify. <br>Codes: <br> CodesExplanation Setting <br>Range Factory <br>Settings <br> P0 Heating/cooling H/C H <br> P1 Return difference 3-30 5.0 <br> P2 Set the maximum limit +300 300 <br> P3 Set a minimum limit 0 0 <br> P4 Temperature calibration +10~-10 0 <br> P5 Delay start 0-10min 0 <br> P6 High temperature alarm 0~300 OFF <br> P7 Data locking ON-OFF OFF <br> P8 Restore factory settings ON-OFF OFF <br>First. temperature setting <br>After the thermostat is powered on, the actual temperature will be displayed. Press the SET key once and the screen will flash. Press the up and down keys to adjust the temperature. <br>Second. Long press the SET button for 5 seconds to enter the system settings. After setting, press ENT to confirm and return. During normal work, long press ENT to shut down <br>Third. PO: working mode <br>When the thermostat is used for the first time, this value should be set. If it is used for heating and heating, it is set to "H". If it is used for cooling and cooling, it is set to "C". <br>P1 hysteresis setting <br>The return difference is the difference that the temperature controller needs to work again after it reaches the set temperature and stops. For example, if we set the heating mode and the temperature is 37-40 degrees, then the hysteresis is 3 degrees. <br>P2-P3: Set limit height <br>This function is to set the temperature limit range, not to participate in the design of the temperature setting. Under normal conditions, the setting range of the thermostat is -5~120. If you don't want that large range, you can use this function to shorten the setting value. range. If P2 is set to 50 and P3 is set to 20, then the setting range of the thermostat can only be set between 20-50. <br>P4: Temperature correction <br>This function is used for temperature calibration. If there is a deviation between the actual temperature and the actual temperature, you can use this function to calibrate. The corrected value = the measured value + the corrected value. For example, we measured the temperature to be 25.6 and the actual temperature is 25.8 degrees. Set to 0.2, then the displayed temperature is 25.6+0.2=25.8 degrees. <br>P5: Delay start <br>This function is generally used for compressor refrigeration. If you buy this thermostat for refrigerator or freezer, then this value must be set. According to the size of the back pressure sent by the compression, the general setting value is 3-6 minutes. If it is not for controlling the compressor or Delay function is not required, this value is set to "0" <br>P6: High temperature alarm <br>Set the high temperature alarm value. When the actual temperature exceeds this value, the screen and buzzer will prompt an alarm at the same time. At the same time, the output will be cut off to protect the safety of the circuit. The alarm is displayed on the screen as "H""H""H", and the