¡ö Features Environment-friendly Double power supply channels and super low voltage drive IC optimize energy saving effect. The sourcing, design and manufacturing of Yaham products are in strict accordance with RoHS standard. Manufacturing is complied with ISO14001 environment management system. ¡ö Safe Built-in distribution system, integrated power and signal lightning protection. The anti-theft and intelligent alarm system guarantees safety of equipment. The rear double-layer door design optimizes cooling and sealing effect. The redundant power supplies provide uninterrupted operation. ¡ö Intelligent Built-in automatic dimming system guarantees perfect brightness in daytime and no glare at night. 4¡ãdeclined forward structure design makes better viewing for motorists. Dot detection function can report fail status of the sign to control computer and helps technician to perform swift maintenance upon the sign. The built-in environment monitoring system assures VMS work well. ¡ö Specifications Viewing Angle(H/V): 30¡ã/30¡ã OR 70¡ã/35¡ã (optional) Operation Temperature: -40~+60 degree Celsius Humidity Range: 5%~95%RH Viewing Distance: 15m~300m (static), 20m~220m (moving) Sign Intensity: automatic-dimming from 100cd/m2~10000cd/m2 Refreshment Rate: 500+ HZ IP Rating: IP65