Transponders are portable between vehicles of the same class.
If you are a frequent user of 407 ETR, we can help save you money. A transponder is a small electronic device that you attach to the interior of the windshield behind the rear-view mirror. Installation requires no tools and can be done in less than two minutes. For transponder users, the electronic sensors located on each overhead gantry log your 407 ETR entry and exit point. On exit, a green light on the transponder and four short beeps indicate the toll transaction has been successfully completed.