Instruction manual
Appendix A. Configuration Menus 
A.11  Brightness 
This menu allows the brightness of the LCD backlight to be adjusted. Since 
the backlight uses a significant amount of power, reducing the brightness will 
extend battery life. In bright, sunny conditions, the backlight has very little 
effect and generally doesn’t help readability, so the HydroSense II detects the 
ambient light conditions and automatically turns off the backlight when 
exposed to bright daylight.  Using the     buttons, set the brightness to an 
acceptable level.  Press   to save or   to quit. 
A.12  Backlight on Time 
The LCD backlight turns on whenever a button is pressed.  This menu 
configures how long it remains lit after each press.  The     buttons change 
the period and   will save it.  Press   to exit without saving. 
Setting the backlight on time to “Always On” will increase average power 
consumption significantly, and drastically reduce battery life. 
A.13  Light Sensing 
In bright, sunny conditions, the LCD backlight has very little effect on 
readability, so the HydroSense II detects the ambient light level and switches 
the backlight off in bright conditions.  This feature can be disabled using this 
menu.  Using the     buttons, select ON or OFF from the list and press 
 to save the setting.  Press   to quit. 
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