The BV206 is a PCB carrier for the low cost Bluetooth modules based on the Cambridge Silicon Radio Chip. The module will accept a version on the AT command set and so is relatively easy to use.
The PCB has reset and a program pin that allows the module to be operated as slave or master.
On Line Resources
Features
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Bluetooth Specification v2.0+EDR
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Frequency: 2.4GHz ISM band
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Modulation: GFSK(Gaussian Frequency Shift Keying)
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Transmit power: not more than 4dBm, Class 2
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Sensitivity: not more than -84dBm at 0.1% BER
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Rate: Asynchronous: 2.1Mbps(Max) / 160 kbps
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Synchronous: 1Mbps/1Mbps
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Security features: Authentication and encryption
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Support profiles: Bluetooth serial port (master & slave)
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Power Supply: +3.3VDC 50mA
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Working temperature: –5°C to 45°C
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Max. serial baud rate: 1382400bps, support for hardware flow control transfer
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Dimension: 30mm x 23mm x 2.5 mm
Practically speaking the device is Class 2 which has a range of about 10m and is capable of data rates of 1382400 Baud.