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Specifications

RS485 4 doors access controller
Module No: ACC-1004

RS485 4 doors access controller basic functions:
RS485 and RS232 communication
Could control four doors by 2 readers(which means this door could be controlled by both in&out direction)
Card capacity: maximum 20,000 cardholders
Events storage capacity on controller:100,000

RS485 4 doors access controller access control:
256 time zones & unlimited holidays
Remote open
Door status monitoring map
Door open too long alarm
Doors interlock ( only one door could be opened at the same time )
Anti tail-after ( the access will be denied when you exit if you don't read the card when you enter)
Card, password, card + password optional ( depends on the type of the reader )
Access events history query 
Multi-card access ( the access could be granted only by a certain group of people read their own individual card simultaneously )
First card in (all the other access could be granted during a period only after an appointed card being read )
Forced open alarm( input a durass code to launch the alarm in control center )
Peripherals control
Timing upload tasks to controllers

RS485 4 doors access controller time attendance:
Normal working hour set up
Other working hour set up
Holiday schedule
Leave/ business trip compensation sign in
Manual sign in
Attendance report