Bluetooth module HC-05

This module has the Arduino sign the ability to communicate via bluetooth with your computer, laptop or phone.
The module is fully complete (module + base plate), so it is easy to link to the Arduino.

Technical Specifications:

• Protocol: Bluetooth v2.0 + EDR
• Frequency: 2.4 GHz ISM band
• Modulation: GFSK (Gaussian Frequency Shift Keying)
• Transmitting power: Up to 4dBm (class 2)
• Sensitivity to -84dBm (at 0.1% BER)
• Speed:
  • Asynchronous (max): 2.1Mbps / 160kbps
  • Synchronous (max): 1Mbps / 1Mbps
• Voltage: 3.3V - 6V (I/O 3.3V)
• Current: 8mA (connected) / 35mA (pairing)
• Dimensions: 13mm x 27mm x 2mm