HC-05 Bluetooth RF Transceiver Module


  • Bluetooth protocol: Bluetooth Specification v2.0+EDR (Enhanced Data Rate)
  • Frequency: 2.4GHz ISM band
  • Modulation: GFSK (Gaussian Frequency Shift Keying)
  • Emission power: ≤4dBm, Class 2
  • Sensitivity: ≤-84dBm at 0.1% BER
  • Speed: Asynchronous communication: 2.1Mbps (Max) / 160 kbps, Synchronous communication: 1Mbps/1Mbps
  • Security: Authentication and encryption
  • Profiles: Bluetooth serial port
  • Supply Voltage: +3.3V to 6.0 V
  • Supply Current: 30mA
  • Working temperature: -20 ~ +75Centigrade
  • Dimension: 26.9mm x 13mm x 2.2 mm
  • HC-05 Bluetooth module follows the IEEE 802.15.1 standardized protocol, through which one can build a wireless Personal Area Network (PAN). It uses frequency-hopping spread spectrum (FHSS) radio technology to send data over the air.
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