... Module,Variable Message Signs, LED Scrolling Sign,LED Board ,Wireless LED Display,LED Video Wall,LED Moving Sign,LED Road ... drive character storing function and serial port 232 computer sending function. 10. Led display screen supports wireless, USB and RS232/485. ... before shippment2. Freight charges are quoted under your requests3. Shipping port: Xiamen, China4. Warranty time: 2years.If there is no ...