... ordinary RS485 Access Controller 1 thousand times. Communication: RS485 networking or TCP / IP network, 10 / 100M adaptive Ethernet port, ... networking, unlimited distance ARM7 CPU chip 32-bit machines, industrial design, triple-lightning, anti-static, resistant to strong interference and ... 2.5 million cardholders. Can store 100,000 history. Open design, compatibility can be a variety of brands on the ...