Mobile phone jammer equips with the Li-ion battery

Bluetooth technology advantages: support for voice and data transmission; using radio technology, transmission range, penetrate between different substances and materials proliferation; using frequency hopping spread spectrum technology, interference is strong, not easy listening; use in countries not restricted spectrum, in theory, there is no interference problems; low power consumption; low cost. Five colors are available for this kind ofcell phone jammer. Bluetooth Disadvantages: Slow transfer speeds. Bluetooth technology performance parameters: the effective transmission distance of 10cm ~ 10m, increasing transmission power up to 100 meters, or even farther. Transceiver operating frequency of 2.45GHz, the coverage is 79 channels separated by 1MHz (from 2.402GHz to 2.480GHz). Short packet data transmission technology used, frequency hopping spread spectrum technology, 1600 times / second, to prevent eavesdropping and to avoid interference; every time you send a packet, the packet size from 126 ~ 287bit; packet content can contain different data or voice services available. cell phone jammeris also good for the school and church. Sync data transfer bandwidth up to each direction of 32.6Kbps, close to 10 times the typical 56kb / s Modem analog connection speed, asynchronous connection allows one direction of data transfer rates up to 721kb / s, is used to upload or download, this the opposite direction when the rate is 57.6kb / s; data transmission channel to allow three simultaneous synchronous voice channels, each bandwidth of 64kb / s; voice and data can also be mixed in a channel, a 64kb / s simultaneous voice asynchronous data connection and a connection. cell phone jammer is designed to shield all CDMA, GSM and DCS system. Network connection using encryption, password authentication used to connect devices at the same time, both with seven other devices within the network constitutes a Bluetooth Micro (Piconet), 1 a Bluetooth device can simultaneously join eight different micro-network, respectively, each micro-network 1Mb / s of transmission bandwidth, when two or more devices to share a Channel, it can constitute a Bluetooth piconet, a device by which the dominant traffic, when the device is not yet a Bluetooth piconet, it first enters standby the state.
WLAN how to understand the uniqueness of limit?
A: In the commercial during the trial, there is no limit on the uniqueness, that is the same username and password to allow access over the same time. mobile phone jammer equips with the Li-ion battery. Therefore, users can own relatives, friends to share an account and password, but pay attention to the custody of the password to prevent theft by others.

4, WLAN and GPRS compare?
WLAN and GPRS are China Mobile to provide wireless Internet access methods, the two together to form a China Mobile "with e-line" business, to provide users' network player, the world's heart, "the wireless Internet experience.