... dvr of 4channels economic type support P2P cloud functionsupport analog + IP camera .p2p cloud p2p cloud 2*D1 analog & (1*1080p + ... ) Completed protective circuit, treble watchdog function,support freely change boot interface, support Twenty kinds of language. 12. Support IVS ... mapping, just 1 step go to internet with XM cloud technology Application Support IVS(intelligent video analysis system), like ...