The GTM 20 is an integrated FM Traffic Message Channel (TMC) traffic receiver, antenna and 12-volt power adapter. It receives digital traffic information for North America,* allowing your compatible Garmin device to route you around accidents, construction and other obstacles to save you time.
- Covers North America.
- 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.
Specifications
- Physical dimensions: cable cord 5.4' (164.6 cm); cigarette lighter adapter 4.5" (11.43 cm); 18-pin plug 1" (2.54 cm); total length 70.3" (178.56 cm)
- Interface: connects to GPS device via 18-pin flat plug
- Weight: 2.7 ounces (76.5 grams)
- FM tuner band: 88 to 108 Mhz
- Portable: Yes