Seven, Bluetooth can connect up to 7 devices at the same time. However, the types of connected devices should be different, such as Bluetooth headsets, Bluetooth mice, and Bluetooth keyboards. These three are different types. Because it is stated in the Bluetooth protocol, the Bluetooth host can connect up to 7 sub-devices at the same time, but the same device can only be connected to one. Therefore, multiple devices need to be connected, then the types of these devices need to be different.
Expansion: Bluetooth is a radio technology that enables devices to communicate over short distances, typically 10 meters. Supports wireless information exchange between mobile phones, tablet computers, Bluetooth headsets, notebook computers, computer peripherals, and many other devices. The standard of Bluetooth is IEEE802.15, the working frequency band is 2.4GHz, and the bandwidth is 1Mb/s.