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continuing operation. See “Installing Battery” for
instructions.
If the battery is rechargeable, when the
indicator
starts flashing, please charge the battery before
continuing operation. When the external source is
plugged in, the flash of
indicator indicates the
charging state.
Backlight Display
Only TH2822A/C meters have Backlight display that
can allow you to see the LCD display in dark
conditions, TH2822 doesn’t support backlight.
To turn on the back light, you should press the
button for a long time.
To turn off the back light, you should press the
button for a long time.
When Using Battery Power
When the meter is powered by using battery, the
brightness of the back light will automatically decrease
to conserve battery power. When the back light have
lightened for about 15 seconds, the brightness will
continuously decrease; and when the back light have
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