features H.264 video compression, P2P cloud function, supporting android/iOS devices remote view anywhere anytime. It is also with functions of motion detection alarm, dual-stream encoding, which is widely used at home, shopmarket, office and other surveillance needed places. Note: 3.5in SATA HDD not included Features: *4CH 1080P/1080N AHD cameras input and playback (25fps) *P2P cloud function, peer to peer connection, no need port mapping. *H.264 video compression, higher definition image and lower bit rate. *Android/iOS mobile devices remote view anywhere anytime. *Dual-stream encoding. Main stream for local view, presenting high quality image; Sub stream for online remote view, overcome limitation of bandwidth. *Motion detection recording. The DVR will be triggered to record when detect something moving. NO trigger, no record, more intelligent and space-saving. *Email alert and alarm notification. When motion detection is triggered, the DVR will automatically send out buzzer sound and alarm notifications to your email. *Multiple ways to access on the PC, phone and pad, can be viewed by PC client, Phone APP and IE browser.