The video monitor, also known as a baby alarm, includes a radio system that is used to remotely listen to the sounds your baby makes. The transmitter that is equipped with a microphone will be placed close to the baby and the receiver that is equipped with a speaker will be placed close to the person who is caring for the baby. Some baby monitors offer two-way communication that allows a caregiver to talk back to the baby. Some allow you to play music for the baby.
One of the primary uses of a monitor allows attendants to hear when the baby wakes up, when it is out of hearing distance from a baby. Although they are commonly used, there is no proof that monitors prevent SIDS, and most doctors think they provide a false sense of security. Young children and babies can often be heard through a baby monitor when they talk in the crib, where they babble to themselves. It is a normal part of practicing your language skills.
video baby monitor
Some baby monitors also use a video camera to display images on a receiver, connecting the receiver to a television or involving a portable liquid crystal display. This type of surveillance camera is often called a baby camera.
Some baby cameras might work at night in low light. Many video baby monitors today have night vision features. Infrared light emitting diodes attached to the front of the camera allow users to see the baby inside a dark room. Video baby monitors including night vision mode automatically switch to mode in the dark.
These monitors are continually evolving and can now also use features like built-in lullabies and night lights. These are not available on all monitors.
Wireless and wired
Video monitors typically use wireless systems, but can also use wires, or can work with existing home wiring such as X10.
Wireless systems use radio frequencies manufactured by governments for use without a license. For example, in North America, frequencies near 49 megahertz, 902 megahertz, or 2.4 gigahertz can be obtained. Since these frequencies are not assigned to strong TV or radio broadcast transmitters, there is likely to be interference from additional wireless devices such as wireless toys, cordless phones, RADAR, wireless computer networks, microwave ovens, and smart energy meters.
Digital audio wireless systems using DECT will be resistant to interference and will have a range of about 300m. Analog audio transmissions can be picked up at distances from your home by additional scanner receivers or baby monitor receivers and therefore pose a privacy threat as long as the transmitter is turned on. Digital transmission such as frequency hopping spread spectrum offers a degree of protection against casual interception.
smartphone monitor
Smartphone software is an additional type of baby monitors, but it is different from the video monitor. As the software detects sounds, it will call a phone number and allow the user to listen to the sound the baby makes. It will eliminate the dedicated transmitter system and could reach all the way to a public telephone network.
