ZigBee is a protocol that works on the 802.15.4 spectrum (WiFi is also known as 802.11 for its slice of spectrum.) As a short-range, low-power protocol, ZigBee is suited for two-way communications among small devices, and can be used to build self-organizing networks of devices.

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Ultrawideband gear sprays low-power radio waves across a huge range of frequencies, letting them penetrate walls, among other feats.

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It first shipped with Tegra 3 and delivers a great range of very high performance and low power.

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