products description:
HC-05 Wireless BT Module, with this HC 05 Bluetooth module, you can quickly add Bluetooth functionality to your project, and then you can use phones to control gadgets such as switches and LEDs.

Features:
Bluetooth UART RS232 serial converter module for easy transfer of UART data. Support Bluetooth connection through AT command, set baud rate, password, save parameters after setting parameters. Enhanced data rate (EDR) conforms to the 2Mbps and 3Mbps modulation modes of the V2.0.E.2 specification. Full speed Bluetooth operation, support for full Piconet and Scatternet. On-board 3.3V regulator chip, ROHS compliant, compact size.
Spec:
Bluetooth software stack, you can use this Bluetooth module with your system:
* For MCU, ARM or For system.
* For SOC system.
* Digital Assistant (PDA)
* Computer Accessories
* Other systems you want to use under Bluetooth.
UART interface and baud rate setting function
Support on-board 8Mbit external flash memory
Support for 802.11Co-Existence
Hardware:
CSR solution, Bluetooth V2.0 protocol
Support AT Commander
Support Master and Slave modes, modified by AT Commander.
Support 1200-115200 baud rate.
Power: 3.3V single power supply
Core module size: 28 * 15 * 2.35mm/ 1.10 * 0.59 * 0.09in
Overall module size: 35.33 * 19.6 * 3.7mm/ 1.39 * 0.77 * 0.14in

Package Include:
1 * Wireless Bluetooth Module