Audio baby monitors only make use of sounds while video baby monitors make use of a camera and transmitter to send video feeds to a LCD receiver. LCD or Liquid Crystal Display are the choice of manufacturers in video baby monitors since it is light, and is the best mobility wise compared to CRT devices. A typical baby monitor set consists of two parts: a radio transmitter and a portable receiver. The radio transmitter must be positioned 8 to 10 feet away from your baby's crib. Then again, you can always position it closer to the baby for better reception of sounds. The signal picked up by the radio transmitter is then passed on to the portable receiver, which can be carried effortlessly around the house. It fits under the mattress of the baby and alarms you when the baby stops moving or is absolutely still for 20 seconds. Some models available also come with audio monitors installed. These come with a portable parent s unit that sends you the alarm and allows you to hear your baby s activities. What are the things that you should consider? In this way, you will be alerted whenever your batteries need replacement. Compactness The smaller the size of the baby monitor, the more effortlessly you can carry it around. Be sure that you buy a model that allows you to place the receiver inside your pocket. An option that lets you wrap the portable device around your waistline is also an excellent alternative. If you have a preference for multiple-handset-capable wireless phones with a handset-conferencing option, pick one that makes use of only the 1.9GHz or 5.8GHz channel. 4. Switch on the baby monitor first. To get the best possible reception and transmission from a 2.4GHz baby monitor with video capability, switch off all 2.4GHz devices in your house. In order for the baby monitor to obtain the most excellent reception and transmission using the 2.4-GHz channel, you need to switch off all devices that operate in the same frequency. Then switch on the baby monitor followed by your other wireless gadgets. Remember that the base unit of your cordless phone should be switched on last.