The Parani-ESD110V2 is a Bluetooth v2.0+EDR Class1 type Embedded Bluetooth serial module for RS232 cable replacement. The Parani-ESD110V2 is a compact size Bluetooth serial module. By default, it supports 100 meters of wireless transmit distance. The Parani-ESD110V2 has an extension option so that users can extend the transmit distance up to 1,000 meters using optional antennas. The Parani-ESD110V2 also supports up to 4 multiple simultaneous connections.