Camera is very prone to interference. Fixed that problem by buying a new cordless phone system that operates at 4.8 GHZ. If you have a 2.4 GHz cordless phone do not buy or expect to replace your cordless phone. Secondly I purchased a two camera set and the additional camera had a very poor picture with a limited field of vision as compared to the first camera. Returned to Mobi and they sent a replacement which had the same problem. Next I sent them both the good and bad camera back to Mobi for diagnostic purposes and received back two NEW cameras. Now both NEW cameras are bad so now I no longer have a working camera. Buyer should be very careful about wanting to buy this product as I believe there equipment manufacturing has changed (made in CHINA) and the newer products are useless.