User's Manual
Table Of Contents
HT660 Product Reference Guide
21
Storage and Safety Precautions
Batteries should be stored in an open environment and placed where there is no
risk of accidental shorting or other damage. Although charged Li-Ion batteries
may be left unused for several months, their capacity may be reduced due to back
up and internal resistance. If this happens they will require recharging prior to use.
Li-Ion batteries may be stored at temperatures between -4qF and 158qF (-20qC to
70qC).
Backlight Setting
The backlight for color display is user-defined. There are two tabs – one for
Battery Power and the other for External Power.
Field Description
Dim Backlight if Select how many minutes you want to elapse before the
backlight dims.
Turn Off Backlight
if
Select how many minutes you want to elapse before the
backlight automatically turns off.
Turn on Backlight Select this option if you want the backlight to turn on when
the button is pressed or the touch screen is tapped.