Specification of HC-05 Bluetooth Module

• Bluetooth version: 2.0 + EDR (Enhanced Data Rate)
• Frequency: 2.4 GHz ISM band
• Modulation: GFSK (Gaussian Frequency Shift Keying)
• Transmit power: Class 2 (up to 4 dBm)
• Sensitivity: -80 dBm typical
• Range: approximately 10 meters (or 33 feet) in open air
• Profiles supported: SPP (Serial Port Profile), HID (Human Interface Device) and others
• Operating voltage: 3.3V to 5V DC
• Operating current: less than 50mA
• Standby current: less than 2.5mA
• Sleep current: less than 1mA
• Interface: UART (Universal Asynchronous Receiver/Transmitter)
• Baud rates: 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200, 230400, and 460800
• Operating temperature: -20°C to 75°C (-4°F to 167°F)