It is HC-05.
Use the CSR mainstream bluetooth chip, bluetooth V2.0 protocol standards.
Module working voltage 3.3 V.
Potter default rate of 9600, the user can be set up.
The core module size : 28 mm x 15 mm x 2.35 mm.
Working current: matching for 30 MA, matching the communication for 8 MA.
Dormancy current: no dormancy.
Used for GPS navigation system, water and electricity gas meter reading system.
With computer and bluetooth bluetooth adapter, PDA, seamless connection equipment
Commercial Series: Bluetooth module board Series
With LED indicator light, use 150mA and 3.3V regulation chip.
With VCC.GND.TXD.RXD foot for the Bluetooth
With “Re-seach” button(ON/OFF/WAKE foot for it , external MCU outinput “High level” can control module to re-seach)
Compatible with bluetooth master module”.slave module”or master-slave(whole) module.
Input voltage: 3.3~6V
Input power supply 3.3~6V, Prohibit more than 7V
No “Automatically prevent power supply peversing func”, so please correctly connect power supply
We advise to install “Bluetooth master module”
The “State” is output foot for LED status, when bluetooth “Unconnected”, output “Pulse” ; when bluetooth “connected”, output “High level”, we can determine the states from “MCU”