Bus open deck GPS Multilingual audio commentary system

Main Device:TM601M 1.Support GPS auto commentary and manual commentary 2.Support wide range work voltage 10-30V DC 3.Support 16 channels digital audio play and background music play,sound quanlity same as CD 4.Built-in high capacity lithium battery backup power to prevent accidental Power off,affecting the device is working properly 5.Built-in two ways 15W digital amplifier can directly drive an external speaker 6.Support set station coordinates, trigger distance and drive