So, on the deck out back I've got one of those lights with the motion sensor that turns it on. <br /><br />Recently, I purchased a Uniden Cordless phone system.<br /><br />It took me a couple of weeks to figure this out, but every time the phone rings or we turn on one of these phones, the light on the deck turns on.<br /><br />The base unit for the cordless phones is mounted on the wall almost on the backside of where the light is mounted outside.<br /><br />It's not a big deal, just a little strange! Anyone else ever had something like this happen?