Whistler 1670 Owner's Manual page 12

OPERATION
Memory/Beep Confirmation
All features selected (except Stay Alert and Quiet) are
retained in memory. Each time a button is pressed one
beep confirms feature "on", two beeps confirm feature
"off".
Audio Level Adjustment
The audio levels can be adjusted high to low, or low to
high, in nine steps: (0) is no audio level, (8) the highest.
• Press Volume up to increase audio level.
• Press Volume down to decrease audio level.
As audio level is adjusted, beeps are provided and the dis-
play indicates volume level. Example:
VOL
VOL
O
No Audio Level
8
Highest Level 8
10