1.Control panel holder & block terminal ensure easy installation & easy maintenance 2.Native IP, reliable & stable 10/100BaseT fast Ethernet(RAC-2000PN/PSN) 3.Provide RS-232/RS-485 communication interface to PC.(Able to expandable to 255 sets by RS-485 interface) (RAC-2000G/P/PS/PV) 4.Controller and reader separate design, maximum controls 4 RS-485 Readers (2 IN / 2 OUT for 2 doors or reader IN, exit button for OUT of single door) 5.Provides optical coupled isolated sensors for door sensor, exit button and reader tamper 6.Provide 2 relay outputs for electronic lock and alarm 7.Stores maximum 15,000 cardholders/events 8.Provide 128 time zones and schedules, 8  time conditional unlock door schedules, 100 holiday schedules per year (Able input date through software) 9.Provides blacklist and 50 sets visitor card with configurable check digits, duration, usage time & frequency. 10.Anti-passback and Duress card/code setting. When door opened in the emergency, controller will send signal to control center at the same time for tracing and rescue. 11.Door sensor detection time function. The alarm will activation when door unlock over detection time setting. 12.ESD / Surge protection design to protect devices & enhance communication quality. 13.RTC (Real Time Clock) and Watchdog function ensures accurate date/time and system free from halting 14.Support connects external PSU-330 Uninterrupted power supply, ensure the operation during power outages. 15.Integrates with DVR system for image capture and query upon card swipe, leaving track of events as evidence. (RAC-2000PV)