Arrival sensor going bonkers

[marktheknife (Mark)]

It’s possible you’re getting interference from nearby wifi (yours or even your neighbor’s).

FAQ: Networking and Reducing Channel interference between WiFi and Zigbee

This. The SmartThings hub is a very inexpensive device. Its Zigbee coordinator is pretty limited compared to more expensive devices. As @Mr_Lucky said, it cannot change its Zigbee frequency, either on the fly or as a user request. Whatever it was set to at the factory is what you’re stuck with. So, to be honest, “best practices” from a network engineering standpoint just don’t apply to a device of this type. The best things you can do with a SmartThings hub to limit Wi-Fi interference: A) put your smartthings hub at least 3 m from your Wi-Fi router. Also keep it away from metal. B) whenever possible, put your Wi-Fi traffic on 5 GHz, not 2.4. And choose a 2.4 Wi-Fi channel which is the maximum distance from whatever Zigbee channel your SmartThings hub happens to be on. C…