... -pass back, can connect 3rd party E-lock, alarm, door sensor, exit button, various weigand out reader. RF103 were developed in ... · Communications: RS232/485, TCP/IP· Access Control Interface: Lock, door sensor, exit button, alarm, Door Bell, Anti-pass back· Standard Functions ... %-80% · Dimension: 129.5x95x48.5mm· Net Weight: 0.7kg RFID Network Access Control RF103