Pre -warning for mobile camera vans question.

[Brian Lacey]

Is there a detector that will give pre-warnings for the mobile speed camera vans ? I would really like something that can tell me a laser beam is being operated rather than a data base warning. I know that the laser detector will warn when the car is actually targeted by the mobile van but then this is too late and so the need for an earlier live detection of a laser beam ahead.
I have been told that both the Snooper4Zero and the Snooper4zero elite can do this. Is this correct?
Thanks.