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The OBS421i-i4 from u-blox AG is a RF Module with Frequency 2.4 GHz, Supply Voltage 3.0 to 6.0 VDC, Output Power 11 to 13 dBm, Data Rate 1.3 Mbps, Current Transmitting 0.6 to 44 mA. More details for OBS421i-i4 can be seen below.
Compact and Powerful Bluetooth Smart SoC
2.4 GHz Random Phase Multiple Access (RPMA) Module
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