The speed sign can be mooted in a fixed location or portable by trailer.

Speed sign reads approaching vehicle only. Display vehicle speed only.
Environment Production ,easy to use ,
Tempered of Glass,
cell type Monocrystal
Anti – dusty
Anti- Scrape
Life time and age time: battery life cycle: 3 years, solar panels and LED lamp: more than 6 years
It flash 12 hours a day/7 days a week flashing warning

Charges by day, Lights up by day and night and light up to 14 days raining
it will be flash all of night
Allowed operation temperature: 45。-50。 to - 10。