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ZigBee heads for Thread convergence and Wi-SUN battle with dual-radio spec

The Zigbee Alliance has unveiled its Zigbee Pro 2017 specification, which now supports dual-mode devices that use the 2.4GHz band and a sub-1 GHz band. Zigbee has supported both bands for some time, but the dual-mode spec opens the door for a new breed of devices, as the Alliance looks to expand into new markets like smart cities. Notably, the spec unites the two separate approaches to Zigbee deployment. The 2.4GHz band is used by the overwhelming majority of devices supporting the low power personal area network (LPPAN) standard, which in turn are mostly used inside households. The sub-1 GHz support has been used by fewer devices, most commonly in smart meters, acting as the link to the in-home display.…

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