Motorola MBP11 - High-pitched noise from the baby monitor; Battery pack in the parent unit running low quickly

Troubleshooting 15
ENGLISH
The Digital Audio Baby Monitor system produces a high-
pitched noise
• The parent unit and the baby unit are too close to each other. Make sure the
parent unit and baby unit are at least 1.5 metre away from each other.
• The speaker volume of the parent unit maybe set too high. Decrease the
volume of the parent unit.
Battery pack in the parent unit is running low quickly
• The volume level of the parent unit may be set too high which consumes
more power. Decrease the volume level of the parent unit. Refer to section
3.3 for volume level settings.