How long does an outdoor advertising machine last? Is there any proximity sensing operation?

Like the outdoor advertising machine is the most important part of the backlight is changed to a bright LCD screen, general outdoor use to reach 1500nits, for more than 32 inch size, in order to truly realize the effect of outdoor use. LCD screen changed after the backlight does not affect the service life of the screen, the general life of at least seven or eight years. For proximity sensing operation that is a new technology, it is estimated that soon after the promotion of the current technology does not seem to be very popular Oh