Chapter 3. Using the PM880 Screen
Model PM880 Portable Hygrometer User’s Manual 41
3.5 Adjusting the Contrast
To adjust the screen contrast:
1. If the menu is not active, press [MENU].
2. Use the arrow key to scroll to Meter and press [ENTER].
3. Use the arrow key to scroll to Contrast and press [ENTER]. A screen 
similar to Figure 18 appears.
Figure 18: Display Options Window
4. Use the arrow keys to scroll to Darker or Lighter.
5. Press the [ENTER] button repeatedly until the screen has the desired 
contrast.
6. When you are done, press [F3] (OK).
The PM880 returns to taking measurements.