• Extruded alluminium door panel with illuminated keypad and 2 x 16 bias lit LCD   display
• Management of up to 255,000 apartment units
• Acoustic acknowledgement signal confirming that the call is in progress or the   system is busy
• Privacy on audio and door open progressess
• Programmable lock release activation time between 0 and 99s
• Four codes for aaccess control use consisting  of 4 digits each