RF Wireless Bluetooth Transceiver Module HC-05Product Description2.4G GHz Serial Port Bluetooth Module HC-05 Master Slave For GPS Receiver MCUDescriptionSerial port bluetooth, Drop-in replacement for wired serial connections, transparent usage. You can use it simply for a serial port replacement to establish connection between MCU and GPS, PC to your embedded project and etc. HC-06 has be designed Master or Slave when the factory, user couldn't change the role.SpecBluetooth protocal: Bluetooth Specification v2.0+EDRFrequency: 2.4GHz ISM bandModulation: GFSK(Gaussian Frequency Shift Keying)Emission power: \u22644dBm, Class 2Sensitivity: \u2264-84dBm at 0.1% BERSpeed: Asynchronous: 2.1Mbps(Max) / 160 kbps, Synchronous: 1Mbps/1MbpsSecurity: Authentication and encryptionProfiles: Bluetooth serial portPower supply: +3.3VDC 50mAWorking temperature: -20 ~ +75 CentigradeDimension: 26.9mm x 13mm x 2.2 mmApplicationComputer and peripheral devicesGPS receiverIndustrial controlMCU projects