... BoardFEATURES AND FUNCTIONS:1,Our Access Controller fits any type of installations, up to 20,000 users, from single buildings to ... checking 8,Without power supply9,Whenever required, the data stored in the controllers is transferred to the computer and activity reports are printed. Each ... set up within a few minutes. 11,In case of power failure, the back-up battery (up to 12V- 17 A/h ...