Other devices operate in the 2.4 GHZ band, will they cause any problems for ZigBee Home Automation products?
ZigBee is very robust and has demonstrated superb tolerance to extreme interference. The Las Vegas Convention Center is one of worst places for wireless devices, especially during the annual Consumer Electronics Show. Interference at that show often impedes many cell phones and Bluetooth headsets from operating correctly. ZigBee has always performed flawlessly in these extreme environments. For more details, please see the results of extensive coexistence research in the white papers section of the ZigBee website.