Motorola MBP16 User Manual page 19

The 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.
Talk back feature is not working
• Check that the volume is loud enough at the baby unit, refer to section 3.3.
Troubleshooting 19