... multiusers access, 2.support standalone work, 3.For RFID 4.Built-in relay contac BTS-SCR100 ... : 30000,2. logs capacity: 50000,3. Communication: RS232/485,TCP/IP,U-Disk,weigan in/out,4. ... /IP interface, avoid RS485 communication and low speed for transferring data, standalone or network deployment2. Protect the ... the functions of waterproof and dustproof . RS232/485 TCP/IP RFID Access Control BTS-SCR100