Boxed access control power supply . Realy manufacture to focus on CCTV power supply over 20 years
Applicable to all type of CCTV system,access control
Recommended battery: 12V7Ah
Product description: Applicable to CCTV camera, photoelectric beam detector etc.
Metal boxed access control Power Supply power supply 12v 5a cctv,cctv power supply 12v,smps power supply with battery backup Guangdong Steady Technology Co.LTD , https://www.steadysmps.com
From the technical point of view, the LCD panel can be divided into two camps: VA soft screen and IPS hard screen. Among them, the VA soft screen camp includes Samsung, AUO, Chi Mei, and Sharp. IPS hard screen camp includes LG, Philips joint venture IPS and Hitachi, Panasonic, Toshiba joint venture IPS alpha two manufacturers. In fact, these boards belong to the TFT category.
VA soft screen
VA is called the Vertical alignment panel, which can provide 16.7M color and large viewing angle. Of course, the price is also more expensive. It is the most commonly used soft-screen panel for LCD TVs.
The front (front view) of the VA panel has the highest contrast, but the uniformity of the screen is not good enough, and color drift tends to occur. Sharp text is its killer, black and white contrast performance is also very good. VA panels can be divided into MVA panels dominated by Fujitsu and PVA panels developed by Samsung, the latter being the inheritance and improvement of the former. 
VA panel
Fujitsu MVA technology can be said to be the earliest emerging wide viewing angle LCD panel technology. This type of panel can provide a larger viewing angle, usually up to 170°. Taiwan Chi Mei Optoelectronics, AU Optronics and other panel makers have adopted this technology, the improved viewing angle of the P-MVA panel can reach a close to the level of 178 °, and gray-scale response time can reach 8ms or less.
Samsung PVA technology also belongs to the category of VA technology. It is the successor and developer of MVA technology. Its overall quality has been more comprehensive than the latter. At present, S-PVA panels have been developed on the basis of PVA panels. The characteristics of S-PVA screens are obvious, and when observing red, blue, green, or some dark variegated screens You will find that the shape of the pixel is ">", but there are some models whose pixel opening direction is opposite. The improved S-PVA has been able to keep pace with the P-MVA to achieve a very wide viewing angle and faster and faster response time.
At present, many of the 42-inch and 47-inch FULL HD are made of this type of panel.
IPS hard screen
IPS panel technology is a liquid crystal panel technology introduced by Hitachi in 2001. It is commonly known as “Super TFT†and is currently the only hard-screen panel of TFT. The application field has been very broad since its development. Products using IPS hard screens are generally located at a higher level.
The most prominent feature of the IPS board is that its two poles are on the same plane, and the electrodes other than the liquid crystal mode are arranged on the upper and lower sides. Since the electrodes are on the same plane, the liquid crystal molecules are always parallel to the screen regardless of the state, which will reduce the aperture ratio and reduce the transmittance. 
IPS panel
Then, the advantages and disadvantages of the IPS panel are obvious: the viewing angle is higher, the response speed is faster, and the color reproduction is accurate; there is a problem of light leakage, the black purity does not perform well, and it needs to rely on the optical film to compensate.
At present, in addition to LG TVs using IPS hard screen, the domestic color TV manufacturers Skyworth, Konka, Hisense, Changhong also use IPS hard screen panels.
Graded LCD panel
The LCD panel can be divided into three levels according to quality: A, B, and C. The distinction is based on the number of dead pixels. However, there are no relevant hard rules internationally, so the standards for different countries and regions are not the same. Under normal circumstances: 
Note: According to the different panel production areas, the demarcation of the A-class panel is also different: South Korea's A-class board requires the control of bad spots below 3, Japan below 5, and Taiwan requires 8 below.
VA soft screen and IPS hard screen which is good
At present, the market uses more of the above two types of LCD panels, while the IPS hard screen has more advantages (more expensive than the same size VA soft-screen TV). Therefore, I believe that with the continuous improvement of the IPS hard screen technology, the future hard screen IPS panel will become the core panel of LCD TV
OEM and ODM service , TUV verify enterpice 500 people for work , 50 RD for research
Metal cabinet with key lock
Power supply AC input : 96-264V, 47-63Hz
Power supply output : 12VDC
Output voltage regulation range: 11-15V
Tube fuse /PTC fuse selectable
Operating Temp.: -20C - -70C
Surge protection
Protection: over heat, over current and voltage
Safety Standards: IEC/EN/UL/CSA 60950 GB4943
Thick and well finished shell , distinguishable blue color
Which LCD TV panel is better? How to pick
For LCD TVs, the LCD panel is the most important part of the whole machine, accounting for 70-80% of the cost of the whole machine. The level and quality of the LCD panel technology directly determine the function, effect and use of a LCD TV. Therefore, many LCD TV consumers are looking at the type of LCD panel to decide whether to purchase a TV, but there are many friends on this. Do not understand, today, I take everyone with you to understand the classification of the TV LCD panel type and which panel is better.
LCD panel level division