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The 2.4 GHz RF front end module (FEM) nRF21540 from Nordic Semiconductor is a "plug and play" range extender that improves range and connection robustness, when combined with the multiprotocol wireless SoCs of nRF52 and nRF53 Series or other radios.
The SKY66404-11, 2.4 GHz FEM is designed for Zigbee®, Thread and Bluetooth® (including low energy) ultra-low power IoT applications spanning sensors, beacons, and more.