HelloBaby 5" Video Baby Monitor HB6550

Frequency band is the wavelength at which the unit operates.

Lights on the monitor turn on when the baby cries; the louder he cries, the more lights light up. This lets you turn the volume down and still know when the baby is crying, or, if you are in a very noisy room, you'll see the lights and know when baby is awake or crying.

This is a light or beep that lets you know definitively that you've reached the range limit of the monitor, and won't be able to hear if your child cries.

This is a light or beep that is a definite indicator that the parent and baby unit are 'linked' or 'not linked' i.e. communicating.

To avoid risk of injury. Babies have been injured and strangled by baby monitor cords placed too close to the crib where the child was able to reach them. If using a baby unit with a cord, be sure to keep it well out of arm's reach of the baby.

Rechargeable batteries may save parents money over time, especially those who rely on batteries more than AC power for the receiver(s).

This feature allows the parent to push a button and talk to the baby, alerting him/her that mom or dad is on the way.

This is a light (or an icon on an LCD display) that lets you know the batteries in your parent unit are running low.

Some models feature lullabies and/or other soothing music that will play for your baby at the push of a button.

Displays the temperature in the baby's room.

Some models have a simple nightlight on the baby's unit.