3285 reading distance products are offered for sale by suppliers on Alibaba.com, of which access control card readers accounts for 24%, guard tour system accounts for 1%, and laser rangefinders accounts for 1%.
A wide variety of reading distance options are available to you, such as portable, wifi and light weight.You can also choose from cell phone, for iphone reading distance,As well as from smart, power reserve reading distance, and whether reading distance is black, white, or blue.