Bluetooth is a low-power, short-range wireless communication technology. As a small-range wireless communication standard, Bluetooth has the advantage that electronic devices can be wirelessly connected to each other through Bluetooth,

Do not replace batteries and other accessories in hazardous environments. Contact sparks during disassembly and assembly can cause explosion or fire.

​Co-channel interference: Interference caused by two or more radio stations using the same frequency. ​Co-channel interference: Interference caused by two or more radio stations using the same frequency.