So we recommend choosing a baby monitor that uses a different frequency band from your cordless phone and other wireless products in your home. The band that your cordless phone operates on should be printed somewhere on it. Remember that interference can vary widely depending on where you live, the electronic devices you have at home, and the ones your neighbors have. If, for example, you have a 2.4 GHz wireless product, such as an older cordless phone, choose a baby monitor that doesn't operate on the 2.4 GHz frequency band. People with newer phones that use DECT will have fewer issues with interference.
The most important thing to look for in all kinds of baby monitors is audio quality. Regardless of whether you want a video-based baby monitor or not, you need clear audio so you can hear your baby properly. You'll also want one with sound activation so that you don't have to listen to white noise 90% of the time. With sound activation, you'll only hear the noises from your baby's room when there's something important to hear.
If you sleep in the same room as your baby or live in a small enough space that you can always hear or see what your baby is up to, you probably don’t need a monitor. Otherwise, most parents enjoy the convenience a baby monitor provides—instead of needing to stay close to the nursery or constantly checking on your child, you’re free to rest, catch up on Netflix or get things done around the house during naptime. Monitors can also double as a nanny cam to keep an eye on your child and their caretaker.