... 000 Communication:RS232, RS485, TCP /IP Proximity Time Attendance with Access Control and Camera M880 Introduction: M880 is a multimedia proximity time attendance ... : Card Capacity50,000Transaction Storage150,000Hardware PlatformZEM510Operating SystemLinuxCommunicationsRS232485, TCP/IP, USB-HostCard SupportID Card(Standard), Optional HID/Mifare/ iClass CardStandard FunctionsWorkcode ...