Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Constant interference

Unfortunately, I tested this product successfully at home and threw away the packaging. Then my phone rang - constant static when using the cordless phone. And, as others reported, there are occasional blips of static - very, very, very annoying. I am now out the cash and still have to buy another monitor.If you try it - make sure to save the packaging for a while until it is tested under ALL conditions!