Notice：
This DVR does not include 3.5" HDD.
Overview:
Our home security system DVR have many uses: the security detection of public places, monitoring for unattended store and warehouse protection, the park and rides security record and observation, Safety Monitoring for cottages and residential areas, and other surveillance needs for outdoor/indoor.
This DVR is fully functional and supports 16-ch playback(Channeltype is HD1/CIF), which provide a great variety of choices for security monitoring and bring you a safer monitoring system. Meanwhile this DVR provides digital zoom, which allows you to get a closer view of record clips, it maximum supports 3TB 3.5" harddisk(Hard Drive not Included). Finally, you can choose scheduled recording, set motion detection or watch the video on your computer and phone. Easy installation, easy operation.

Features:
* H.264 Video Compression foramt.
* Support pre-alarm recording(before 30 sec).
* 16-ch video and 1-ch Audio input, 16-ch playback.
* Multi-stream recording resolution and Multiple backup modes.
* Scheduled recording, motion detection, digital zoom.
* With P2P cloud function.

Specifications:

ModelST1648
Main ProcessorHisilicon HI3521 Chip
Operating SystemEmbedded Linux System
Menu Display1/4/8/9/16 Screen
Video CompressionH.264
video standardsPAL (625 line, 50f/s); NTSC(525 line, 60 f/s); Switch selectable
Video Input16-ch BNC(1.0vp-p, 75Ω)
Audio Input1-ch RCA
Video Output

 + 1-ch VGA + 1-ch BNC

Audio Output1-ch RCA
Recording resolution

Main-stream: 960H / D1 / HD1 / CIF

Frame Rate1/25fps-Real time frame rate
Dual StreamSupport
Max Synchronous Playback16-ch
Code Capacity16 * 960H/D1/CIF, 4 * D1 + 12 * CIF, 4 * D1
Analog Mode16 * 960H(1/12fps), 16 * D1(1/25fps), 16 * HD1(1/25fps), 16 * CIF(1/25fps), 4 * D1(1/25fps) + 12 * CIF(1/12fps), 4 * D1(1/25fps)
Interface TypeSATA Interface
space usageCIF: 5G/day/ch D1: 20G/day/ch 720P: 40G/day/ch 1080P: 80G/day/ch
Search ModeTime / Date search, fact retrieval, channel retrieval
CapacityUp to 3TB capacity for each HDD
Network Interface1 RJ-45 10M/100M adaptive Ethernet Interface
USB Interface2 USB 2.0 Interface
Serial Interface1 RS485 interface
Backup ModeNetwork backup, USB mobile hard disk, USB burner, DVD disc recorder
Recording ModeManual > Alarm > Dynamic Detection > timing
Power Supply12V 2A
Item WeightApprox.983g / 2.167Lb
Item SizeApprox.25.9 * 23.8 * 4.8cm / 10.20 * 9.37 * 1.89in( L * W * H )
Package SizeApprox.30.5 * 7.5 * 33cm / 12.0 * 2.95 * 13.0in( L * W * H )
Total WeightApprox.1412g / 3.112Lb
Quantity1pcs
Warranty1 Year

Package list:  
1 * 16CH H.264 HD DVR(Hard Drive not Included)
1 * Power Supply for DVR(US Plug)
1 * Remote Control for DVR
1 * Accessory Bag for DVR
1 * CD Software
1 * User Manual