Specifications include, but are not limited to: GENERAL CHARACTERISTICS • The unit shall be capable of being visible and easily understood at a distance of one mile. Vendor shall supply NTPEP test results upon request. • Unit shall be capable of continuous operation in the single arrow mode for 30 days without sun at 100 percent initial battery charge. • The solar panel shall be aligned for maximum charging capabilities whether in operating or travel position. • The controller shall constantly track ambient light conditions to provide maximum system efficiency. • Batteries shall be protected from deep discharge by a solid state, low voltage disconnect. • The bottom edge of the sign panel shall be a minimum of seven feet above the road surface when in the operating position. DISPLAY MODES The unit shall be capable of displaying the following modes: • Left and right flashing arrows • Double flashing arrow • Left and right sequential stem arrows • Straight caution bar • Four corner caution mode • Left and right sequential arrow • Left and right sequential chevron SIGN PANEL • The sign panel shall be sandwich type with (25) twenty-five lamps mounted on the sign face. • The lamps shall be par 46 (5” diameter) LED with a minimum beam spread of 24 degrees horizontal and 8 degrees vertical. • Each lamp shall contain a minimum of 24 high intensity, 590 NM amber LED’s. • The hoods shall be of high impact, UV protected, non-reflective, black plastic. • The back panel shall incorporate (2) two, 2” diameter, L.E.D. indicator lamps to denote mode of operation. • The exterior of the sign panel face and back shall be acid etched and finished with flat black powder coat...
