The systems can be expanded with additional buttons modules or numeric keypad module to select an unlimited number of internal users. The AA-505/506 models integrate a vandal-proof metal keyboard while the AA-506 model is also equipped with RFID proximity reader for Smart Card or Tag.
Installation, controls, inputs
Wall mounting without need for masonry work or flush mounting. 2 relays for door opener control or other services. Only for the AA-539 industrial model it is possible to manage 3 external signals for specific functions.