7, QR code function (optional).

System Settings: General Settings
 1.   DRV control: normally open and none;
 2.   ZME type: normally open and normally closed;
 3.   Touch sound: on and off;
 4.   System language: Chinese and English;
 5.   Display brightness (%): 1-100;
 6.   Measurement mode: manual and automatic;
 7.   Measurement time (s): minimum 1 second;
 8.   Speed detection: open and close;
 9.   Relay function: select test mode, flow rate, measuring cup, temperature control;
 10.  Temperature control: open and close;
 11.  Set temperature;
 12.  Deviation range, change the diesel temperature, click the corresponding parameter to modify, input the corresponding data,and press Enter to exit and save;