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Composition and working principle of baby monitorBaby monitor is also called baby monitors. It is a wireless home security system, which is composed of care unit (monitoring end or baby end) and display (also become a control terminal or the parents end) two parts. The nursing device can be placed in the baby's room, so you can custody the baby's safety through the display at any time. As a family security product, baby monitors provide real-time monitoring by monitor the end of the baby's every move, every word and action; the monitor result is sent to the control terminal on the guardian hands by the analog signal or digital signal device and restore into the video or audio. Through the use of a Video Baby Monitor, the parent or guardian no longer need to glue to waiting at the side of the baby or child but they can understand their behavior, and can immediately detect and deal with when there is abnormal situation. Baby monitor is not only the best infant daily life care, but also is a good helper to care for the elderly and patients.Application of baby monitors Baby monitors greatly improve the life of freedom and flexibility of the parents. With this device, the parents can handle other affairs in another room or even in the courtyard outdoors, at the same time, they are well aware of the child's the situation, do not have to always live in fear, so that the baby monitor is a good family helper for parents. In addition to be used for baby care, baby monitors are widely used for elderly care and safety protection for supermarkets, offices, companies, schools, families, hospitals, and other small places. In the history of the baby monitor industry, 2.4G Digital Baby Monitors and 40/49M baby monitor occupy a major part. Since the 1980s, the 40/49MHz baby monitor production industry basically uses dozen MHz crystal oscillator operating frequency, then the multiplier. The advantage of this solution is technologically simple, low-cost, but 3 octave lead circuit to be in full of a lot of unnecessary number of harmonics and the fundamental. In order to filter out unwanted frequencies, usually the peripheral tuning is used to select the desired frequency. Production debugging is complex, poor rate, and a working frequency needs a crystal, for a multi-channel selection listener, it needs multiple crystals, increasing the production costs and complexity of the circumferential tuning. With the rapid economic development, the rapid upgrading of electronic products, fierce competition in the industries and enterprises, the product cost control has become an important threshold in consumer electronics. Foreign infant listener industry development is more mature, more extensive use, well-known brand include Angelcare.www.china-jlt.com is a high-tech enterprise specializing in the R&D, manufacture and sale of video baby monitor, wireless home security cameras and other wireless products. We have served a long list of customers from Europe and North America and accumulated rich experience in marketing wireless items. If you are interested in our products, please feel free to visit our website!This article come from:http://www.chinaphoneparts.com/index.php/baby-monitors-are-widely-used.htm