4Pcs HC-06 RS232 4 Pin Wireless Bluetooth Serial Transceiver Module Bi-Directional Serial Support Slave and Master Mode

Industrial serial port bluetooth Drop-in replacement for wired serial connections transparent usage. You can use it simply for a serial port replacement to establish connection between MCU and GPS PC to your embedded project and etc. Computer and peripheral devices.
Operating voltage: 3.3V
(Note: SPP-CA Bluetooth module serial port level to 3.3V if connect 5V level the system needs to increase the level conversion chip. );
Communication interface: UART 3.3V TTL level;
Bluetooth version: V 2.0 +EDR;
Signal coverage: 30ft;
Storage temperature: -40 ~ +80; Led indicate Bluetooth connection status flashing Bluetooth connectivity lit the Bluetooth connection and open a port Backplane. Small size low power consumption high sensitivity for send and receive; Allows your device to both send or receive the TTL data via Bluetooth technology without connecting a serial cable to your computer;
Running in slave role: Pair with BT dongle and master module.
Please note: iOS devices are not supported.
Defaults: Salve baud rate 9600 Bluetooth name HC-06 pairing password 1234 LED status light on. Core module uses HC-06 leads from the module interface includes VCC GND TXD RXD reserve LED status output pin the microcontroller can be judged by the foot state Bluetooth has connected KEY pin slave invalid.
Applications: The Bluetooth module is mainly used for short-range data wireless transmission such as Bluetooth wireless data transmission Industrial remote control wireless LED display system wireless data acquistion telemetry Traffic underground positioning alarm Smart home ect.