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5V Dual Channel Relay Module Red Digital Display Thermometer Temperature Control Board

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Product Introduction:
1.Temperature Control Range: -20~100 celsius
2.Resolution: 0.1 celsius (-9.9~99.9 celsius); 0.1 celsius (in other ranges)
3.Measurement Precision: 1 celsius
4.The Minimum Temperature Difference: 0.1 celsius
5.Update Frequency: 0.5s
6.Input Power: DC 5V
7.Measurement Input:1m NTC metal waterproof sensor
8.Output: two channel 10A relay
9.Ambient Range: -10~60 celsius; 20%-75%
10.Specification: 70mm*39mm

Using Introduction:
1.Circuit Connection: connect the power and the load, when there is no temperature sensor or get damaged, then the digital tube will display "---"
2.Indicator Lamp: OFF means the relay is disconnected; ON means the relay is operating
3.Digital Tube: display "---" 1.Check whether there is temperature sensor or it is damaged; 2.Heating mode high temperature protection 3.Cooling mode low temperature protection. When it is in protection mode, the relay will be automatically disconnected
  Key +: to achieve fast rising of the value
  Key -: to achieve fast decreasing of the value
  Key SET: 3-interface switch; temperature set interface, temperature and operating mode query interface, parameter set interface

Short press the SET: according to the difference of pressing times. in the corresponding upper and lower limit temperature the digital tube will flash;
during the flash time, users can set the upper or lower limit of the temperature; after setting, it will automatically save data 8s later or
pressing the key for three times can also achieve it.
Long press the SET: enter into real time temperature and operating mode query interface, and the digital tube (upside) is real time temperature,
and downside is operating mode. L means the temperature is lower than set lower limit temperature, H represents the temperature is higher than
set upper limit temperature; OFF represents the temperature is within the range of upper limit and lower limit, and the relay is disconnected.

Mode Set: set temperature 1-upper limit temperature; set temperature 2- lower limit temperature
For example, set the upper limit temperature as 40.0 celsius, lower limit temperature is 20.0 celsius. In different temperature range, the relay operating mode is as below:
When the actual temperature is higher than 40 celsius, the relay 1 will operate, and relay 2 is released
When the actual temperature is in the range of 20~40 celsius, the relay 2 will be released
When the actual temperature is lower than 20 celsius, the relay 2 will operate and relay 1 will be released

Parameter Set: firstly press the SET key then supply power to the temperature controller; then it can enter into parameter set interface, and there are three group parameters P0-P2 for chosen.

1.P1=PFF: means the actual temperature is higher than upper limit temperature, then the relay will operate all the time (long operating state)
2.P1=1-999: means the actual temperature is higher than upper limit temperature, and the relay will operate for corresponding time; then stop (inching operating state)
3.P2=OFF: means the actual temperature is lower than lower limit temperature, and relay will operate all the time (long operating state
4.P2=1-999: means the actual temperature is lower than lower limit temperature, and the relay will operate for corresponding time; then stop (inching operating state)


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