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IQRF is a technology for wireless packet-oriented communication via radio frequency (RF) in sub-GHz ISM bands. It is intended for general use where wireless connectivity is needed, either point-to-point or in complex networks. Fully open functionality depends solely on a user-specific C application written. Basic IQRF communication device is a transceiver module (TR) including MCU with built-in operating system (OS) implementing link layer and network layer supporting Mesh networking utilizing open IQMESH protocol. No higher communication level such as transport layer is part of the technology. Unlike the solution stack used, e.g. by ZigBee, only the application program is compiled while in development. ==Features== * Low speed, low power and low data volumes * Packet-oriented RF, up to 128 B/packet * Software-selectable RF parameters: * Sub-GHz RF bands (868 MHz, 916 MHz, …), multichannel, FSK modulation * Bit rate 1.2 kbit/s – 86.2 kbit/s * RF output power up to 20 mW * Range more than 1 km per hop, up to 240 hops per packet * Up to 65 000 devices in one network * Low power consumption: 380 nA standby, 25 µA receiving * Application code can be wirelessly uploaded to all nodes at the same time * No license fees 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「IQRF」の詳細全文を読む スポンサード リンク
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