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Hello everyone! If you have problems with ZigBee devices and specially meshing of ZigBee network is not working as expected then please read following articles that can enlighten you and give you possible solution: Article by Joel Crane: https://support.metageek.com/hc/en-us/articles/203845040-ZigBee-and-Wi-Fi-Coexistence Article by Nico: https://haade.fr/en/blog/interference-zigbee-wifi-2-4ghz-to-know Note that in cases where household has one router and one HC3 adjusting WiFi and ZigBee channels to avoid interference is easy, but with more devices it gets more complicated. WiFi: For example in my case is not so easy because I have WiFi router with additional 3 access points, Sonos speaker network, Philips HUE Pro bridge and two Home Center 3. Since I have Ubiquiti UniFi managed network it is quite easy to optimize WiFi deployment and network. Usually automatic optimization does the job. My WiFi router 2.4GHz uses channel 1, AP for back of the house is on channel 11, AP for garage is on channel 6 as it is AP for my barbecue house that is on the opposite side from garage. Sonos 2.4GHz WiFi network can work only on channels 1, 6 or 11 and that can be sort of a problem since speakers are deployed all around the house. In my case is set to channel 6 since garage and barbecue house AP's has lowest traffic. ZigBee: I have replaced my two old Philips HUE bridges v2 with one HUE Pro bridge. Note that my two old HUE beridges where using ZigBee channel 25 and 26. New HUE Pro is now on ZigBee channel 25. Both ZigBee channels are far away from WiFi channel 1 which is used by my router and therefore no interference at all. Both HC3 are now set to use ZigBee channel 15 which would be OK if I have only one HC3. ZigBee channel 15 is just between WiFi channels 1 and 6 and that is good, but having two devices on the same channel is NOT good. Since Fibaro is missing option for users to manually select ZigBee channel bigger systems with more than one HC3 could run into trouble. Conclusion: If you have problems with WiFi and ZigBee, please check your WiFi network and ZigBee gateways settings before you start throwing rocks on Fibaro and anyone else here. Thank you!

My plumber has installed a "waterstop" unit from Altech in my new house, to close the main water valve when triggered. Such a unit is required in new installations, according to him. It has a wireless connection to two leak detectors, and operates on a frequency of 868.100 MHz. That seems very close to the European z-wave frequency of 868.4 MHz. Is there a risk of interference? Or will frequencies and protocols be sufficiently different to avoid problems? By the way, the z-wave standard indicates two frequencies, 868.4 MHz and 869.85 MHz. Are both used in standard equipment?