Access Control Board Power Supply Security 485 Communication, a single system can be networked wi ... Adjustable Door Open Time*No Limitation for Network Doors*ACCESS Software database*-40 – 70 Operating Temperature*220V, 50HZ input, 12V, 3A ... *10,000 Users, 30000 records*Flash ROM Power off Protection*Software basic function: Door sensor alarm, Automatic change between card and ...