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The GTM 21 is an integrated FM Traffic Message Channel (TMC) traffic receiver, antenna and 12-volt power adapter. It receives digital traffic information for Europe,* allowing your compatible Garmin device to route you around accidents, construction and other obstacles to save you time.
Save drive time, fuel and your sanity by adding traffic services to your compatible Garmin with the help of the GTM 21, a portable traffic receiver.
Avoid Traffic Congestion
Similar to the GTM 20, the GTM 21 is an integrated FM TMC (Traffic Message Channel) traffic receiver, antenna and cigarette lighter adapter. Designed exclusively for the European version of your Garmin device, it receives digital information (where available) on traffic and road construction tie-ups and sends it to your Garmin device to offer an alternate route. TMC data is available in a fast-growing number of cities throughout Europe, and gives prompt, accurate notification of accidents, road construction, police or emergency action, etc. — so you can visually monitor traffic flow and, if necessary, avoid traffic congestion and jams.
Plug and Drive
The GTM 21 is a fully portable, plug-and-play design that uses a 12-volt cigarette lighter adapter. No professional installation required. Just use the suction cups to attach the antenna to your vehicle's windshield. Then plug the GTM 21 into your compatible Garmin device, and you're ready to receive data.
Receive Real-time Traffic Data
In most areas, depending on the service provider, TMC traffic broadcasts are continuous — there's no waiting for scheduled traffic news updates or random alerts. With the GTM 21, you see traffic developments in real-time, as they happen, so you can make the right decision sooner. Because traffic broadcasts are received via a "silent" FM data channel, you can still listen to music or news programming on your car radio without interference from incoming FM traffic data transmissions.
GTM 21: Because you have better things to do with your time
Combines antenna, traffic link and 12-volt power adapter.
No professional installation required — just plug it in and drive.
Real-time traffic data — no waiting for scheduled traffic news updates or random alerts.
Won't interfere with music or news on your FM car radio.
*Traffic services are available only in select cities where coverage exists. A subscription may be required to enable traffic service.