About this product it includes built, In web management interfaceThis product represents backed by tcp/ip communication, Enhancing reliability of network system. It is loaded with push technology to communicate with server. And smb nas, Surveillance integration protocol, It supports ntp client. It functions as a robust and ruggedized system ensuring durability. It may serve as easily deployed by following simple user guidelines. Specification model vcu, 1001 cpu arm architecture ram 1gb storage 8gb communication tcp/ip 100m/1000m management interface web management card/user capacity 100, 000 users standalone mode log event buffers offline 500, 000 events buffers number of readers 1 readers rs232 door controlled 1door input 1 door sensor and 1 exit device output 4 relay output door and aux time to open the door 1, 600 seconds adjustable usb yes door open alarm yes alarm linkage software and hardware linkage remote door open yes anti, Pass back yes power 5v dc 3 a Operating temperature of -40 degrees c~70 c operation humidity 10, 90 % rh, No condensation