Dry materials Material thickness Loss of range
Wood, plaster, cardboard, glass (without metal,
wires or lead)
< 30cm (12in) 0-10%
Brick, plywood < 30cm (12in) 5-35%
Reinforced concrete < 30cm (12in) 30-100%
Metal grilles or bars < 1cm (0.4in) 90-100%
Metal or aluminium sheets < 1cm (0.4in) 100%
Features and settings
Volume
You can adjust the speaker volume of the parent unit to the level you prefer.
1 Press the top or bottom part of the control button to adjust the volume.
Tip: Make sure that the volume is adapted to the current conditions.
Under noisy conditions, the vibration alert can be turned on as well.
The volume bar appears on the display to show the selected volume.
Note: If the volume is set to a high level, the parent unit consumes more
power.
Note: When the volume bar is at its minimum, the volume is muted. The
parent unit shows a mute icon in the status bar and you will only receive
alerts and video from the parent unit.
Brightness
You can adjust the display brightness of the parent unit to the level you
prefer.
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