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Uses

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Ranges of Bluetooth devices by class Class Max. permitted power Typ. range (m) (mW) (dBm) 1 100 20 ~100 1.5 (BT 5 Vol 6 Part A Sect 3) 10 10 ~20 2 2.5 4 ~10 3 1 0 ~1 4 0.5 −3 ~0.5 Bluetooth is a standard wire-replacement communications protocol primarily designed for low power consumption, with a short range based on low-cost transceiver microchips in each device. Because the devices use a radio (broadcast) communications system, they do not have to be in visual line of sight of each other; however, a quasi optical wireless path must be viable. Range is power-class-dependent, but effective ranges vary in practice. See the table "Ranges of Bluetooth devices by class". Officially Class 3 radios have a range of up to 1 metre (3 ft), Class 2, most commonly found in mobile devices, 10 metres (33 ft), and Class 1, primarily for industrial use cases,100 metres (300 ft). Bluetooth Marketing qualifies that Class 1 range is in most cases 20–30 metres ...
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Bluetooth

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Bluetooth is a wireless technology standard used for exchanging data between fixed and mobile devices over short distances using UHF radio waves in the industrial, scientific and medical radio bands, from 2.402 GHz to 2.480   GHz, and building personal area networks (PANs). It was originally conceived as a wireless alternative to RS-232 data cables. Bluetooth is a short-range wireless communication technology standard. Bluetooth is managed by the Bluetooth Special Interest Group (SIG), which has more than 35,000 member companies in the areas of telecommunication, computing, networking, and consumer electronics. The IEEE standardized Bluetooth as IEEE 802.15.1 , but no longer maintains the standard. The Bluetooth SIG oversees development of the specification, manages the qualification program, and protects the trademarks. A manufacturer must meet Bluetooth SIG standards to market it as a Bluetooth device. A network of patents apply to the technology, which are licensed to individual q...
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21)Any Republic of Inhospitality

India Republic Day -- While India celebrates Republic Day time and the chests of numerous Indians swell with pride at the thought of our immens e diversity and imagined military prowess it is well in order to reflect on what kind of Republic the nation has become. A republican form of government is not merely one out of which the head of state is not a hereditary monarch; rather the modern republic engraves the idea that sovereignty resides inside the people and that the will of the people as expressed through their own representatives is supreme. What has however been essential to the idea of the republic everywhere is the notion involving inclusiveness. In this respect the tales that have been coming out of India nowadays tell a tale that is chilling to the bones a tale which will leaves behind a stench that no amount of sloganeering concerning Swachh Bharat or even one thing more than a symbolic wielding of the broom can eradicate. If inclusiveness is the touchstone of an Repub...
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