Worst monitor I've come across. The sound quality is low, when it actually works. But the biggest problem is that it DOESNT keep working. Sound will play through t for about a minute, then all noise will cut off from the unit for a minute, two minutes, until I walk back into the room the baby unit is in and make a loud noise near it, then sound will start transmitting again.... for a minute or so at best. Isn't even worth the petrol I'm having to use to get to the shop to first buy it and now return it.