... and access control functions in one that Based on the ARM Processor, Can multi-task real-time concurrent processing, can ... times.Support for Wiegand, ABA communications format read head.Technical Specification 1. Power supply: DC 12V/1A, normal working mode less ... weight: 550g. ER-881 Multimedia Time Attendance and Access Control,ARM Processor,support M1 card, ID card,Support 485 communication and ...