G4 Interior Transponder
Mounting Instructions
G4 interior transponders mount to the inside of the vehicle windshield. The preferred mounting location
is between the roofline and the rear view mirror post. If adequate space is not available in the preferred
mounting location, the transponder can be mounted beside the rear view mirror post. The transponder
is secured using 3M™ Dual Lock™ fasteners.
Requirements
For reliable operation of the transponder, the vehicle should not be
equipped with more than one transponder of similar design while
passing through a toll facility. Other transponders present in or on
the vehicle must be switched off or enclosed in an RF shield.
The mounting location must provide direct line-of-sight
communication between the transponder and the toll facility
overhead antenna.
Do not mount the interior transponder in vehicles:
with non-metallic roofs.
with windshields covered in RF-blocking material (ex. metal oxide).
with a metallic center windshield dividing post.
without center-mounted rear view mirrors.
Handheld mobile communication devices must not be located within
12” (30 cm) of the transponder.
Metal objects (except for the rear view mirror and the roof) must not
be located within 6” (15cm) of the transponder.
G4 Interior transponders cannot be used where local regulations
prohibit mounting transponders on the windshield.
Apply the 3M Dual Lock fasteners in accordance with 3M document
70-0709-4029-4.
Transponder Mounting Instructions
3M Dual Lock adhesive pads on the back of the transponder are used
to mount the transponder. Choose the correct mounting location
of the transponder (preferred or alternative) before affixing it to the
windshield.
Preferred Mounting Location
The transponder should be mounted between the roofline and the rear
view mirror mounting post, such that the top of the transponder is ½”
(1¼cm), but no more than 2” (5 cm) from the roofline, and the bottom
of the transponder is a minimum of ½” (1¼cm) from the rear view mirror
post.
(see diagram for preferred mounting location)
Alternative Mounting Location
If there is insufficient space in the preferred location, select an alter-
nate mounting location beside the rear view mirror post.
(see diagram for alternative mounting location)
Kapsch TrafficCom North America
