The “Silent Messenger” full-sized Message Board is the cornerstone of the SolarTech product line. This rugged portable changeable message sign is designed to provide information to improve traffic flow and safety in work zones, for both drivers and workers. The Silent Messenger consists of a 126” w x 76” h sign panel with a 27 x 48 pixel full matrix LED display on a sturdy steel trailer, powered by a combination of solar panels and batteries. The sign telescopes on a lift and rotate mast, and can be rotated for optimal visibility. The sign comes with integrated GPS receiver, a cellular transceiver and FREE lifetime cellular service. Use with Command Center software for remote communications – messages can be changed from a pc or a smartphone.