The Parani-ESD100 and Parani-ESD110 are Class 1 type of Embedded Bluetooth Serial Modules for RS-232 cable replacement. By default, they support 100 meters of wireless transmit distance. The Parani-ESD110 has an extension option so that users can extend the transmit distance up to 1,000 meters using optional antennas. The Parani-ESD200 and Parani-ESD210 are Class 2 type of Compact Embedded Bluetooth Serial Modules for RS-232 cable replacement. By default, they support 30 meters of wireless transmit distance. The Parani-ESD210 has an extension option so that users can extend the transmit distance up to 300 meters using optional antennas. Features Output Interface UART, Compliant Bluetooth Specification v1.2- improved AFH(Adaptive Frequency Hoping), Fast connection Transmit Power - ESD100/110 : Max. +18dBm, ESD200/210 : Max. +4dBm Receiving Sensitivity - ESD100/110 : -88dBm(0.1%BER), ESD200/210 : -80dBm(0.1%BER) Compact size - ESD100/110: 27.5 x 27.7 x 14(mm), ESD200/210: 18 x 20 x 11.7 (mm) Provides transparent RS232 serial cable replacement. Supports Bluetooth Serial Port Profile. Interoperability with PDA, laptops etc. Built-in chip antenna included Supports firmware upgrade via windows-based software(ParaniUpdater) Working distance ( In an open field ): Parani-ESD100: Class 1, Nom. 100 meters Parani-ESD110: Class 1, Nom. 100 meters, up to 1000m using patch antenna