What are the differences between the Enforcer II and the Inspector II?

The Enforcer II is designed for police usage for vehicle checks.  It is used with one hand on roll down windows, so the other hand is free in case of potential gun usage. The Inspector II is designed for inspection stations. It works on any window, including front and back windshields. The two-piece design requires one side to be on the inside of the vehicle, so it is not recommended for police officers for safety reasons.