The Parani-SD1000-01 is a Class1 Bluetooth serial converter that supports 100 meters of wireless transmission distance by default. The Parani-SD1000-01 has an extension option so that users can extend the transmission distance up to 1000 meters using optional antennas. Supports Bluetooth v2.0 EDR specification. The Parani-SD1000-01 has two battery options, standard and extended battery. For these options, the portability of the Parani-SD1000-01 is further enhanced. Parani-SD1000-01 also supports up to 4 simultaneous connections.