• Description: • Note:It's HC-05,Slave and master two in one module • this module can be set to a transmitter or receiver, transmitter could pairing with receiver , receiver and receiver or transmitter and transmitter can't communication between each other, receiver could pairing with computers and cell phone bluetooth , when buying, the default for receiver. • • 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 GPS navigation system, water and electricity gas meter reading system. • 9. With computer and bluetooth bluetooth adapter, PDA, seamless connection equipment .