1. Press the button for 3 second ,the tester will turn on

2.Then enter the menuto choose the car module  .

3. When using the tester in dark , please press "L" , it is for LED light . 

4.Insert the tester into reservoir for a second

5 Read the result .

Power: 3V

Test Range: DOT3 DOT4 DOT5

Lighting: 5M

Suction: 1000g

Temperature: -30C ~ 198C

Weight: 130g

Probe: 12mm * 4mm

Tips: After each finished the test, with a dry cloth or tissue to wipe clean the test points.