LCD 21.5 monitor "Dell LCD 21.5" Dell
- Customer pickup,
- Courier
- In detail
- BrandDell
- Country of manufactureChina
Monitors for systems of video surveillance appeared as a specific class of equipment, together with development of television. The first monitors for systems of video surveillance it is not enough, than differed from the first TVs and studio monitors for installation of TV programs. It were bulky devices of the black-and-white image, with small screens and permissions, and weak parameters of brightness and contrast.
Of course, emergence in the market of visualization tools of new type of displays – flat panel liquid crystal monitors gave the chance to increase both resolution of displays, and their size. But several years ago liquid crystal displays had strong contenders – projective and plasma TVs. Projective technology, having easily coped with problems of increase in the size of the image and its clearness, could not overcome the technological shortcoming – depth of the case and abandoned the markets of visualization tools. And the plasma technology, could not pass into the area of monitors with small (up to 19 inches) and average diagonal (to 26 inches) and makes monitors, since diagonal in 32 inches today. -
The majority of monitors for video surveillance are displays, small and average by the size, and therefore, practically as a result they got all market of supervision, to liquid crystal monitors. Today LCD monitors possess more than 90% of all market of monitors for video surveillance. The remained 10 percent of the market occupy today kineskopny monitors which or did not manage to replace on liquid crystal, or apply owing to specifics of concrete object.
How to choose the monitor for video surveillance?
Before buying the monitor for system of video surveillance it is necessary to proceed from several simple rules. First, define quantity of video cameras of your system of supervision and make the decision on the size of monitors. Here follows, recognizes from the rule that comfortable viewing of the monitor is possible at the following ratio of distance from the observer to the monitor.
Or based on the ratio of 1 meter of diagonal – 3 meters of a distance. At the same time the table of a ratio the number of fields and diagonal of the monitor for supervision can look so: -
- 4 chambers – from 17" - -
- 9 chambers – from 19 to 22" - -
- 16 chambers – from 19 to 40" - -
- 20 chambers – not less than 32" - -
Costs also will decide on type of sockets which will be used in priority in your system of supervision. At least monitors for video surveillance have to have sockets - VGA or HDMI as many video recorders have an opportunity - simultaneous work with these types of sockets. -
In general the share of the price of monitors for systems of supervision seldom exceeds the tenth part from a total cost of such system, and therefore you should not save on good monitors.
Standard systems of video surveillance have - very important appointment – continuous monitoring and documenting of the events which are taking place in the enterprise. It helps the management to estimate overall performance of the subordinates, control of working hours, degree of their respectability, responsibility, etc., increasing thereby efficiency of business processes and preventing such widespread phenomena as internal plunders, forgeries, industrial espionage or just elementary hostility of some employees to each other interfering the working process.
Specialists of the GSC company successfully realized a set of multi-scale standard and individual projects of video surveillance. Quality and cost of our services , and also terms of their realization, will pleasantly surprise you.
Technical specification
Name of a product | LCD 21.5" - Dell E2214H, Black, 1920x1080 (WLED), 5ms, 250 CDs/m2, (1000:1), DVI/D-Sub |
Producer | Dell |
Model | E2214H |
The colors used in registration | Black |
Diagonal | 21.5" - |
LCD matrix type | TN |
Illumination of a LCD matrix | LED (LED) illumination |
Matrix brightness | 250 cd/m2 |
Contrast of a LCD matrix | 1000:1 - static |
Screen surface | Opaque |
Monitor interface | DVI, VGA (15-pinovy connector D-sub) |
Response time | 5 ms |
Matrix format | 16:9 |
Display resolution | 1920 x 1080 |
Viewing angle | 170 ° - across, 160 ° - down |
Management | Mechanical buttons |
Adjustment of position of the screen | Inclination |
Power supply unit | Built-in |
Fastening to a wall | the arm for fastening is got separately |
Safety | The slot for Kensington Lock |
Delivery set | Food cable, VGA cable, cable DVI, CD disk |
Energy consumption | 30 W - the maximum, 19 W - nominal, 0.5 W - in a waiting mode |
Sizes | 51.3 x 39.7 x 16.6 cm |
Weight | 3.8 kg |
The main | |
---|---|
The producer - | Dell |
Type | LCD monitor |
Screen diagonal - | 21.5 (inch) |
Display resolution - | 1920? 1080 |
Matrix type - | TFT TN |
Large-format screen | Yes |
Screen format | 16:9 |
Color of the case - | Black |
Country producer | China |
Warranty period - | 12 (months) |
80 900 Tg.