... Messages to the device,and it will show on TV Screen SpecificationsYou can use your mobiphone or ... Messages to the device,and it will show on TV Screen.AdvantagesGSM SMS add to AV signalGSM ... mainly used in the video signal added on TV screen, such as Chinese, characters, simple graphics, etc ... region of information real-time display ,Adopts video screen, factory real-time manage,Adopts video car ...