I recommend the Wiseupshop WP-SDVR104-K5-2 .
1.H.264 Compression Format 4Ch 1080P Realtime Recording Recording Resolution Adjustable Multiple Recording Modes Selectable
2.Support 4ch Playback at the Same Time Support 16x Fast-forward or Backforward in Max RS485 Interface 2x USB 2.0 Interface Support PC Client Software or CMS View
3.Support Smartphone View Support Event Email Notification Support 2x HDD Total 6TB in Max 3TB HDD Included Network Function
4.1/3" 2.1 Mega Pixel Panasonic CMOS Sensor 1920x1080P Full HD Video Output 3.6mm 3MP Board Lens IR Day/Night Vision
5.HD-SDI Video Signal Output WDR, 3DNR, BLC Functions Privacy Zone Motion Detection OSD Menu