Bluetooth Mesh lighting control
Casambi is the best known commercial wireless lighting control company, Casambi is a technology company (privately owned from Finland) not a “protocol” unlike Dali which is an open protocol. This is called property technology. The heart of the technology is the Casambi Radio which operates on the 2.4GHZ open radio spectrum. The language spoken on this spectrum is Bluetooth but it is a different dialogue to the Bluetooth your phone uses for you car hands free. Basically Casambi Bluetooth talks other Casambi Bluetooth and other Bluetooth systems can't understand what they are talking about …a Geordie talking to a Londoner …. As Casambi is wireless radio environmental factors like solid brick walls effect the radio signal.
The talk is in a “mesh” going though other Casambi devices to find the exact device you want to control. Unlike WIFI there is no router so no single point of failure, the instruction will take any path to deliver the instruction to the exact device you want to control. Therefore all devices are permanently turned on even if the “lamp” is off, this is called standby. Casambi is scalable from a room to complete buildings and campus, it can be used internally and externally.