Model # WTMMB-SLL(A) - Hydraulic Lift WTMMB-SLL(B) - Manual Winch Setup: Under 3000 pounds, can be towed by most vehicles Standard 2-inch ball coupler tow-hitch Hydraulic lift allows one person to easily raise and lower Tower rotates 360 degrees for optimal positioning Single disk brake holds board in place during operation Operation: Self-contained on-board computer Easiest programming in the industry Preprogrammed text messages, symbols and graphics Quick-reference instructions Optical lenses and sunshades increase visibility Wide footprint provides stability in high wind Multi-level password protection Control box can be locked Standard QWERTY keyboard is easily replaced Power system: Solar panels charge batteries without intervention Cooling fans protect from overheating Battery box can be locked Maintenance: Individual character modules can be replaced easily Standard 15-inch trailer tires Heavy-duty bolt-on steel fenders can be replaced if damaged Durable powder-coat finish resists the elements Standards compliance: NTCIP compliant, Meets MUTCD, AASHTO (NTPEP) tested