... Product name: ali express tricolor high quality led wireless taxi roof signs 1,ali express taxi roof signs2 ... USB, TCP/IP, Wireless communication )the screen can display text, display images, display time, display temperature, display EXCELL document, showing ... .) 120Viewing angle-V (deg.)60Blind spot rate lessthan1/10000Color temperature (K)6500Ingress protection (front/rear) IP65/IP21Input voltage ( ...