Working Instrustion:
Two working modes of this product integration: one way working mode and two way working mode.
One way working mode: when the DS-A temperature minus the DS-B temperature is greater than the set temperature difference, the relay A action, you can start the relay related equipment. When the temperature difference is less than the preset temperature difference return difference, the relay A is disconnected, and the related equipment stops working. DS-B is greater than DS-A, the relay does not move.
Two way working mode: when the absolute value of the difference between the two sensor temperature is greater than the preset temperature difference, relay A action, you can start the relay related equipment. When the temperature difference is less than the preset temperature difference return difference, the relay A is disconnected, and the related equipment stops working.
Set example 1: solar hot water circulation, high temperature probe – low temperature probe >5.0 degrees, relay action, the difference back to 4.5 degrees relay off. The low temperature probe is larger than the high temperature probe, and the relay does not move.
Set the temperature difference is 5.0C, the return difference is set to 0.5 degrees, the working mode is set to PP 1.
Set example 1: air convection cycle, the difference between the two probes >3.0 degrees, relay action, the difference back to 2.7 degrees relay off. low temperature
Set the temperature difference is 3.0C, the return difference is set to 0.3 degrees, the working mode is set to PP 2.

Parameter:
1. Based on the comparison of the temperature difference between the two temperature measuring points of the high temperature and low temperature, the operation of the water pump:
1) temperature difference = high temperature value low temperature value.
2 operating mode: high temperature – low temperature > set temperature, open the output, high temperature – low temperature < set temperature - return temperature, stop the output.
2 boot automatically detect the number of sensors, no plug sensor or just plug in a sensing probe, the alarm display 0000 indicator light.
3 permanent memory: after the power is cut off again on the last set of parameters and running state into operation
Channel number: 2 channel
Sensor: Digital waterproof type DS18B20 probe(1m)
Temperature measurement accuracy: 0.1?
Display resolution: 0.1?
Control return difference: 0.1?
Temperature control range: -45? -125?
Output drive capability: 10A, 250V
Supply voltage: 5-24V DC 0.1A
Display mode: Digital tube 0.36 inch, 4 bit
Auxiliary display module: Red yellow green LED, auxiliary indicate parameter setting
Input mode: Touch button
Auxiliary function: Each relay with purple LED indicates close disconnect state switch alarm, buzzer alarm
Size: 94*62*18mm
Location hole: 85*56mm m3mm

Note: it was originally two relay design,4 white terminals of lower right corner are all welded, but cause a lot of buyers to connect the wrong line,so to avoid connecting the wrong line, we now only weld a relay and a white terminal, completely feasible available.

Parameter setting method
-Press the SET key, the yellow light starts to flash, the display screen displays the setting temperature difference, according to&T++ T–& to set the required temperature difference value. Display templates such as 7.1C
-Press the SET key again, the yellow light starts to flash, the display screen displays setting temperature difference return difference, according to& T++ T–& to set the temperature difference return difference. Display templates such as H 1.2
-Press the SET key again, the Green starts to flash, the display screen displays the working mode, according to e T++ T–& to set the mode. Display templates such as PP 2. PP 1 represents one-way working mode, PP 2 represents two-way working mode.
-Press the SET key again to exit the set, LED all off, showing the actual measurement temperature, the system automatically save the settings parameters, began to enter the work.
-Special note: after SET, T++, T– key settings, without any key action within 4S, the system automatically save the current settings of the parameters, and then show the measurement temperature and enter the work mode. Long press the button, the key value automatically increase.