SATS - 600 Speed Advisory Trailer Sign Features: 1,300mm (W) x 900mm (H) solar powered unit with maintenance free battery operation. Radar speed display and data logging. Fully galvanized and powder coated trailer. Ability to display 1 & 2 lines of text and graphics. Highly visible in all light conditions. Multiple programming modes including optional on board keyboard, via the internet or SMS from your mobile phone. Satellite tracking and Alarm and status reporting options. Many security features fitted.