I have the Whistler Pro78SE detector which is a great unit. The Whistler Intellecord is supposed to be compatible with my unit. The cord does what it's supposed to, but it randomly shuts the unit off and turns it back on. I don't have any problems when I use the power cord that came with my detector, only with the intellecord. If the Intellecord didn't do this it would be a useful thing to have.