It is the other of the biggest selling points of this kind of cell phone jammer

It is not realistic to test the quality of every piece of cell phone jammer
The software simply modify the configuration can be completed for the operation of the controller. The scalability of the whole machine can meet different configuration requirements. Seamlessly compatible with a variety of mixed-signal. KD-H2-compatible high-definition digital input signal, and can be connected into a variety of VGA, AV signal input can support hard disk recorders, head of video surveillance, ordinary PC, the monitor signal, DVD video interface, also compatible with NTCS and PAL. Enhance the image quality color. KD-H2 built-in powerful image quality with enhanced features, the faint image of the source, by adjusting the color configuration to enhance the image quality settings can automatically save the image of the single-window multi-channel signal can be support different color scheme. It will make the customer hold cell phone jammer more conveniently and comfortable.
Laser principle. Spontaneous emission, stimulated absorption and stimulated emission. According to modern physics, the atom with energy, these energies can only take discrete values, called the level, the lowest level state called the ground state and other levels in the samples is known as the excited state. Atoms in a high energy level is unstable, it seeks to transition to the low - energy, a non-radiative losses on the part of the energy and the radiation of light back to the ground state. From high energy level, atomic spontaneous transitions to low energy levels of light-emitting process known as spontaneous emission, shown in Figure 4-1. The light radiation frequency. Where is Planck's constant; two energy levels corresponding to the energy for the frequency of the radiation of light; transition to occur. It is the other of the biggest selling points of this kind of cell phone jammer .
In a low energy level state atoms, the excitation energy of light, will absorb the excitation light to the energy level state. This process is called stimulated absorption, shown in Figure 4-2. Accordingly, in a high energy level state atoms, the effect of light energy by the energy level state transition to a low energy level state, and radiation out of phase with the incident wave, the same polarization, frequency and direction of propagation of light waves. This process is called stimulated emission, shown in Figure 4-3. Optical amplification conditions - population inversion. Light by stimulated absorption and stimulated emission is the basic process in the laser, they are at the same time there is also conflicting. By shake absorption, atomic absorption excitation by low energy level to a high energy level. They can use the specific key of cell phone jammer .