There are three types of classes in different Bluetooth specification.
Class 1 - Range of fewer than 10 meters
Class 2 - Range of 10 meters (33 feet)
Class 3 - Range of 100 meters (328 feet)
Facts :
- The range depends on atmospheric, geographic, urban conditions.
- The range not only depends on the transmitter but also on the mobile phone which is receiving files.
- The bigger the range, the slower transmission speed.
- Here above Bluetooth range described above. There are three types of classes. class 1 devices transmit at 1 mW with the range of fewer than 10 meters. Class 2 devices transmit at 2.5 mW with a range of 10 meters or 33 feet. Class 3 devices transmit at 100 mW with the range of 100 meters or 328 feet.