1 touch points:4-touch 2 resistance to strong sunshine 3 water-proof,vandal-proof 4 outdoor usage 5.CE,FCC,RoHS GreenTouch ... and maintenance-free.3. Longevity of service ,maintenance free.4. Aluminum alloy shell with strong stability.5. Tempered glass ... (less than 16 ms), no blind area, breakpoints, jump points, pause and otherundesirable phenomena.10. Compatiblewith multiple systems, support ...