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The wireless remote controller which has several classification?

Categories: FAQStars: 3Stars Visit: - Release time: 2014-03-27 14:29:00
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Along with the progress of wireless remote society also extended to a very wide field, simple remote control has 2 kinds of common, is a household electrical appliances infrared wireless remote controller used, another is a burglar alarm wireless remote control electronic signals commonly used equipment, garage doors, electric windows, anti-theft device for automobile etc.; each one has different characteristics and advantages, application areas are different; wireless remote control basic types in use? Wireless remote industry leader - Shenzhen science and technology - the answer for you!

1.the infrared remote control common carrier frequency for 38kHz, which is transmitted by using 455kHz crystal to decide. In the transmitter to the integer frequency of crystal oscillator, the frequency factor is 12, so the 455kHz / 12 ≈ 37.9kHz ≈ 38kHz. There are also some remote control system uses 36kHz, 40kHz, 56kHz, generally by the oscillation frequency of the transmitter crystal to decide; the advantages of infrared remote control will not affect the surrounding environment, does not interfere with other electronic devices. Its disadvantage is unable to penetrate the walls, not between the wireless remote control and receiving any barrier, can control the distance is short and the sensitivity is not high.

2.the radio remote control device commonly used frequency is 315mHz or 433mHz, wireless remote controller is the state of the opening bands, in this frequency range, transmission power is less than 10mW, the coverage of less than 100m or less than the units, can do not have to go through "radio management committee approval and free to use". China's open frequency regulation for 315mHz, while Europe and the United States and state regulations for 433mHz, so the export to these countries products should use 433mHz remote controls; radio remote control common coding mode has three various types, namely fixed code, learning code and rolling code two, code learning and rolling code is a substitute for the fixed code upgrade, rolling code remote control is currently the highest security, at present all the higher security settings, use rolling encoding. Can remote control distance radio remote control device has the advantages of long, small power can reach 100 meters, power can reach 3000 meters, greatly improving the convenience and safety in operation, and without interference, goods out cost savings, improve efficiency. Its shortcoming is easily affected by the surrounding electronic equipment.