1080P Realtime recording 4 Channel DVR HD-SDI 1920×1080 Security Camera System with (2) 2.1 Megapixel 1080P Varifocal Zoom Cameras and Pre-Installed 1TB Hard Drive

This vari-focal zoom camera is one that has been specifically designed to operate at various focal distances. It can typically be adjusted to accommodate viewing lengths from between 2.8 mm to 12 mm, which offers a lot more range than cameras with a fixed lens and allows a lens to be adjusted to accommodate multiple lighting environments for even better clarity and focus.
Overview
HD-SDI 1920×1080P High Definition 4 Channel DVR with 2 x HD-SDI 1/3" 2.1 Megapixel 1080P Outdoor or Indoor Camera, 1920×1080 Pixel, 2.8~12mm Manual Varifocal Lens. Support E-SATA. iPhone, Android Viewing. HDMI & VGA. Preview, recording, and network live, backup, playback, PTZ Control

DVR Feature
4CH Video-input, 2CH Video-output (VGA、HDMI)
4CH Audio input, 1CH Audio output (RCA)
1920x1080P Record resolution
4ch sensor input, 1 channel alarm out
Support VGA & HDMI, 1920*1080P Output
2 SATA HDDs, up to 8TB
Supports Remote View via smartphone & 3G Mobile with each of those systems below: WindowsTM XP, Vista, 7 , 8, iPad , iPhone, Android

Camera Feature
GW201HDSDI: HD-SDI 1/3" 2.1 Megapixel CMOS Camera, Progressive Scan, 1080P Video Output Mode, 2.8~12mm Manual Varifocal Lens, Water proof
1/3" 2.1 Megapixel CMOS
HD-SDI Video Output Level
1080P (1920×1080) Video Output Mode
Off/Low/Middle/High DNR

Package Includes
1 x GW1204HDSDI 4 Channel DVR with Pre-installed 1TB Hard Drive
2 x GW201HDSDI: 1080P Manual Varifocal Zoom Camera
1 x GW60HDS : 60ft RG59 Combo Siamese CCTV Coaxial Cable
1 x GW25HDS : 25ft RG59 Combo Siamese CCTV Coaxial Cable
2 x GW12V0.5A: Power Supply for Security Camera
1 Year Warranty and Free Tech Support From US