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Access Control Card Youhe RFID Add Token or Card

4 doors access control board access control panel+4 rfid readers/u high speed flash memory, keep data safe without power. NoteA door can be openned only when 2 or more cards are read(multiple persons are present). RS485Max to 1,200M, Reliable value 1,000M, can be extended up to 3000 M by RS485 relay.