Extech Instruments VPC300 - Zero the Particle count Sensor

(How to Use the Extech VPC300)
23. Then press the enter button ( ).
24. A screen will appear (below) displaying your captured images. Press the up arrow ( ) or
down arrow ( ) to find and highlight the screen capture you want. Then press the enter
button ( ).
*You can also do this process (steps 19-24) to retrieve saved videos and particle logs. On step 22,
rather than the Picture option, choose Video or Particle Logs instead.