1. Powerful CMS software. 2. Support 3G/WIFI auto switch. 3. Provide SDK MVS is powerful and robust ... and persons.It has extensive functions and featureslike 3G,GPS,WIFI,alarm,Vehicleinfo,E-map,etc.MVS CMS Feature:3G video ... , LED,advertiser, voice remind, etc.Automatically switch between 3G and WIFI, Audo-downloadUser authorization grade managementSupport multi-grade platform structure(option ...