Product Guide - KX-HNC301
How to add additional cameras to a monitor. - Baby Monitor
Up to 3 additional camera units can be registered to the monitor unit. View this answer to learn how to add additional cameras.
How to adjust the speaker volume. - Baby Monitor
In this answer we will show you the method to adjust he volume on both the monitor and camera.
How to configure the temperature sensor. - Baby Monitor
You can specify how the temperature units (Celsius or Fahrenheit) are displayed on the monitor unit and the alert range.
How to reset the settings for a camera unit. - Baby Monitor
The camera unit settings saved on a monitor unit can be reset. All camera unit settings except for registration settings are reset. View this answer for the reset procedure.
This link will provide you with a interactive guide of the Baby Monitor functions.