Operation, Power button, Volume level adjustment – Rocky Mountain Radar RMR-8RDS User Manual
Page 6: Display brightness control, Mute button

OPERATION
POWER BUTTON
VOLUME UP &
DIM BUTTON
VOLUME DOWN &
MUTE BUTTON
CITY BUTTON
Power Button
Press the power button to turn the remote on. The remote goes 
through a self-test sequence and returns to the previous settings 
in memory. 
 
Volume Level Adjustment
Press Volume up button (V/U) to increase volume level. 
 
Press Volume down button (V/D) to decrease volume level.
 
NOTE: Press the V/U (DIM) or V/D (MUTE) buttons for less 
than two seconds each time to adjust the volume level. Press 
and hold the V/U (DIM) and V/D (MUTE) buttons for more 
than two seconds each time to engage DIM and MUTE 
functions. 
6 
Display Brightness Control
There are four levels of brightness for the display. 
 
Hold down DIM button for two seconds. Each time you hold 
down the DIM button for two seconds the display brightness 
will change (Dim, Dimmer, Dark and Bright). 
 
NOTE: The remote cannot activate Mute and Dark at the same 
time. If the MUTE is engaged the Dark cannot be activated and 
vice versa. 
 
Mute Button
Hold down MUTE button for two seconds. This will silence the 
tone sound. 
 
Hold down MUTE button for two seconds to engage the Auto 
Mute feature. The voice “Mute Two On” will alert you that 
Auto Mute has been engaged. 
 
In Auto Mute mode, the remote will announce the radar bands 
then beep four times before going silent. It will remain silent for 
two minutes or until detects a new radar band(s). The remote 
will repeat this cycle in Auto Mute mode. 
Hold down the MUTE button for two seconds to restore tone 
sound. 
 
 
