What is Bluetooth Mesh?
Unlike wi-fi controls, where each device has to communicate directly with the wi-fi router, Bluetooth Mesh is designed for large collections (thousands) of devices i.e. switches, lights and sensors that communicate with each other by forwarding a message (command) across all the devices in that Bluetooth chain until reaching the destination device to perform said operation. The communication travels from the originating device through a chain of Bluetooth Mesh enabled devices, like a Bluetooth highway. (Read more about Bluetooth Mesh here.)