... Vandal proof, wear-resistant and dustproof function, Fault tolerance design to ensure reliability4.. High-speed, up to 300 ... , automatic detection and reset function design, high reliability, track smooth 7. Fault-tolerant design, Special structure, anti-static, ... Versatile touch object 8. Proprietary anti-ray decline of circuit design, Super transparency 9. Maintenance free, longer life expectancy, ...