The Teltonika FMB920 is a slim, best-selling 2G GNSS/GSM/Bluetooth tracker engineered for reliable vehicle security and fleet management. Measuring just 12 mm thin, it installs discreetly in tight vehicle spaces and includes an integrated 170 mAh Li-Ion backup battery to maintain tracking even if the main power is cut. Built for comprehensive anti-theft protection, it supports remote engine immobilization via its digital output, along with instant towing, unplug, jamming, and crash detection powered by a built-in accelerometer.