HC-05 Bluetooth V2.0 Module Audio nsmitter Wirele Reciever Bluetooth Module for SpeakersSpecification:Note:It's HC-05 Bluetooth module and master two in one modulethis module can be set to a nsmitter or receiver, nsmitter could pairing with receiver , receiver and receiver or nsmitter and nsmitter can't communication between, receiver could pairing with computers and cell phone bluetooth , when buying, the default for receiver.Feture:1. It is HC-05.2. Use the CSR mainstream bluetooth chip, bluetooth V2.0 protocol standards.3. Module working voltage 3.3 V.4. Potter default rate of 9600, the user can be set up.5. The core module size : 28 mm x 15 mm x 2.35 mm.6. Working current: matching for 30 MA, matching the communication for 8 MA.7. Dormancy current: no dormancy.8. Used for navigation system, water and electricity meter reading system.9. With computer and bluetooth bluetooth adapter, PDA, seamle connection equipmentCommercial Series: Bluetooth module board SeriesWith LED indicator light, use 150mA and 3.3V regulation chip.With VCC.GND.TXD.RXD foot for the BluetoothWith "Re-seach" on(ON/OFF/WAKE foot for it , external MCU outinput "High level" can control module to re-seach)Compatible with bluetooth master module". module"or master-(whole) module.Input voltage: 3.3~6VSize: 1.55cm*3.98cmNote:input power supply 3.3~6V, Prohibit more than 7VNo "Automatically prevent power supply peversing func", so please correctly connect power supplyWe ase to install "Bluetooth master module"The "State" is output foot for LED status, when bluetooth "Unconnected", output "" ; when bluetooth "connected", output "High level", we can determine the states from "MCU"If only the board , No any "Bluetooth Function "Package Included:1PCS HC-05 bluetooth module