Special Note: This module can not be usedPL2303Serial module AT command set (PL2303Serial port baud rate of less than module38400), suggest usingCH340CP2012FT232 etc.Serial module or desktop or serial port settingsAfter using the phone to connect a Bluetooth module to send AT command set.

ATK-SPPBluetooth module
The default serial port settings are: 9600, data bits, no parity bit.
Passcode: 1234

1) Module Overview
ATK-SPP is designed for data transmission designed Bluetooth module, follow the Bluetooth 2.0 Agreement. SPP Bluetooth serial port protocol support, support for UART interface. EquipmentThere are low-cost, good compatibility, low power consumption.
1. Can be used for computer, Bluetooth host, cell phone, PDA, PSP and other intelligent terminal with a variety of Bluetooth pairing.
2. Wide range of baud rate 4800 ~ 1, 382, 400, and the module is compatible with 5V / 3.3V microcontroller system.
3.Wide voltage power supply: 3.3V ~ 5.5V
4. When the master-slave mode pairing two Bluetooth module, you can simply replace the previous serial line communication applications, change to a wireless Bluetooth, so that your equipment or products more advanced, more stylish.


2) Applications
This module is mainly used for wireless transmission of data in the field a short distance. And PC can be easily connected Bluetooth device, it can also exchange data between the two modules. Avoid cumbersome cable connections, can directly replace the serial cable.
Bluetooth wireless data transmission;
Remote control and monitoring;
POS system, wireless keyboard, mouse;
transportation, underground location, alarm;
automated data acquisition system;
wireless data transmission; the banking system;
wireless data collection;
building automation, security, wireless monitoring and control room equipment, access control systems;
smart home, industrial control;
automotive testing equipment;
interactive television program voting equipment;
government energy-saving equipment lights
wireless LED display system
Bluetooth joystick, gamepad Bluetooth joystick, gamepad Bluetooth joystick, gamepad
Bluetooth Printer
Bluetooth remote control toys
car diagnostic OBD

Haha, the original Bluetooth so simple! Do not need to understand the Bluetooth protocol, you can implement the Bluetooth feature.