Fisher Price lights and sound Review

My husband and I are on our second child. With our first child we used the fisher price light and sound baby montior. It worked great it was wireless so I could take it with me everwhere in the house even outside while I was gardening. We had our second child last year her bedroom was always beside ours so we never needed one. Recently we moved into a new home and the babys bedroom is on the 2nd floor ours in on the 1st. So went went out and bought the new fisher price lights and sounds one due to us loving our old one. Five minutes after  the baby monitor has been turned on it turns to all static. Not just the in and our static its like some switched the channels. We took it to the store and exchanged it and tried the new ones that night. They did the same thing. After exchanging them for the third time we finally gave up and went with a different type of baby monitor. What more can I say 3 different sets of the same baby monitor and none of them worked. I have always loved fisher price products but this one was just a waste of money and my time.