cell phone jammer has the mapping function

cell phone jammer has the mapping function.
U disk to receive the benefits of an integrated device, one is more convenient to use, to bring wireless presenter, on board U-disk; the other hand, U disk as receiver and take up only one USB port, you can save your computer's USB port . If the computer's USB port is not that enough, this advantage is particularly obvious. Current common operating systems, such as Windows XP, Windows 2003, Windows Vista, WINDOWS 7, Windows Server 2008, Linux, Mac comes with promise of wireless devices used by the demo driver. When the promise of wireless presenter into the USB port on the computer, the operating system automatically recognizes the device and then automatically comes with the driver installation program. When the promise of wireless presenter into the USB port on the computer, the operating system automatically recognizes the device and automatically install the operating system comes with drivers. So users only need to insert the computer USB port on the promise of Wireless Presenter receiver, and then wait 3-5 seconds, you can use, and do not need to promise to the site to download and install the driver, not need to use the driver CD to install the driver.Between the transmitter and the receiver can play as long as there is no shielding effect of the metal barrier material, can be used normally. RF technology, product cost is usually higher, but no direction, more convenient, more so by the users. Promise as a wireless presenter series, most are used in radio frequency technology. cell phone jammer with remote control is composed of a emitter, a receiver and a USB port.
2.4GHz RF technology is referred to a working band, 2.4GHz ISM (Industry Science Medicine) is the world's open free wireless band. Work in the 2.4GHz band can get a stronger anti-interference ability, and because transmission power is small, more suitable for battery-powered products. 315MHZ and 433MHZ is our country free of transmitting and receiving frequency of application for long-distance transmission, diffraction ability. This product is used in the field of wireless meter reading than the more launch power, energy consumption is relatively large, is not suitable for battery-powered applications. 19.2.4G the promise of wireless presenter products, and other manufacturers of 433M, 315M of product compared to what advantage?
Promise for the integration of wireless presenter products are the industry's mainstream chip brand in the heat control is a leader. Red laser modules used in more mature technology, manufacturers have produced many, the price is cheaper.