Supplies of CCTV Digital Camera Equipment Supplies of CCTV Digital Camera Equipment Supplies of CCTV Digital Camera Equipment
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We are UK based, if you prefer to
phone on 020 7258 1831.
Monday to Saturday, 9.30AM until 5.30PM
We accept Visa, Master Card, Delta and Switch Cards

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Digital Video Recorders


771 4ch Digital Video Recorder

Click for Big Picture
Multiplexer & Quad recording mode switching
Recording rate(NTSC):Up to full size 30 images/sec. or Quad size 120 images/sec.
Recording rate(PAL):Up to full size 25 images/sec. or Quad size 100 images/sec.
Wavelet compression format
4 CH DVR replaces Time-Lapse VCR + Multiplexer / Quad
On Screen Display and Remote Control via Video Server & PC
Picture-in-picture (PIP) in live
Alarm input & output function
Video Loss Detection on each channel can record up to 256 events
Support 1 HDD, IDE TYPE (over 250 GB)
Quick multiple search by date/time, alarm and full list
Security password protection

Video format
Hard disk storage
IDE type, UDMA 66, supported over 250 GB HDD
Recording mode
Manual / Alarm / Timer
Camera Input Signal
Composite video signal 1 Vp-p 75Ω BNC, 4 channels
Main Monitor Output
Composite video signal 1 Vp-p 75Ω BNC
Call Monitor Output
Composite video signal 1 Vp-p 75Ω BNC
Video Loss Detection
Refresh Rate
Up to 240 field/sec. for NTSC  / 200 field/sec. for PAL
Recording Rate
Up to 30 frames/sec. for NTSC  / 25 frames/sec. for PAL
Dwell Time
Programmable  (1~15 Sec)
Picture in Picture
Yes (Movable)
Key Lock
Camera Title
8 letters
Video Adjustable
Hue/ Color/ Contrast/ Brightness Adjustable
Alarm Input
TTL input, Hi (5V), Low (GND)
Alarm Output
Remote Control
RS-232 or RS-485
Time Display Format
Power Source
AC90-220V, 47Hz~63Hz
Power Consumption
Operation Temperature
10 ~ 40°C
RS-232C / RS-485 (bps)
Dimension (mm)
343(W) x 223(H) x 59(D)
Net Weight
2.52 kgs

4CH. Digital Video Recorder
with 1 x 1
60GB Hard Drive £199.95

with 1 x 250GB Hard Drive £

Price Excludes Carraige and UK VAT
"771" 4Ch. DVR | "773" 4Ch. DVR with Motion Detection | "780" 4Ch. DVR with Motion Detection & USB
"042" 4Ch. DVR with Motion Detection & Networking | "830A+" 8Ch. DVR with Motion Detection & Networking
"1630A+" 16Ch. DVR with Motion Detection & Networking | " 163" 16Ch. DVR with Motion Detection & Networking
[ B/W Body CCTV Cameras | Colour Body CCTV Cameras | PCB CCTV Cameras | Mini CCTV Cameras | Dome CCTV Cameras | Bullet CCTV Cameras | Outside IR CCTV Cameras | PTZ CCTV Cameras | CCTV Camera Accessories ]


Henrys Electronics Ltd
Need Any Help? Call: 020 7258 1831

404 Edgware Road, Paddington, London, W2 1ED, UK,
VAT Number : GB 241 7629 61
Tel:+44 (0)20 7258 1831, Fax:+44 (0)20 7724 0322, email:


All prices exclude 17.50% VAT, and Carriage Charges. For UK and Europe Please Add 17.50% VAT To All Prices, E & O.E. Last Up dated and Validate Febuary 2005. All comments or enquires to: layout and design Duncan Evans, Copyright ©1997-2005 Henrys Electronics Ltd.