Allows your device to both send and receive TTL data via Bluetooth technology without connecting a serial cable to your computer.

    Works with any USB Bluetooth adapters.
    Default Baud Rate: 9600,8,1,n.
    Built-in antenna.
    Coverage up to 30ft.
    Bluetooth version: V2.0+EDR
    Operating voltage: 3.3V
    Default Baud Rate: 9600,8,1,n.
    Signal coverage: 30ft
    Cable length: 21.5cm
    Item size: 4.3 * 1.6 * 0.7cm
    Item weight: 3g
    Package size: 9 * 3 * 1cm
    Package weight: 8g


    Commercial Series: Bluetooth module board Series
    With LED indicator light, uses a 150mA and 3.3V regulation chip.
    With VCC?GND?TXD?RXD foot for the Bluetooth
    With "Re-search" button (ON/OFF/WAKE foot; external MCU input of "High level" can control the module to re-search).
    Compatible with Bluetooth master module, slave module, or master-slave (whole) module.
    Input voltage: 3.3~6V
    Size: 1.55cm*3.98cm

 Note:
Input power supply 3.3~6V; prohibit more than 7V.
No "automatic power supply reverse prevention function," so please correctly connect the power supply.
We advise installing a "Bluetooth master module".
The "State" is the output foot for LED status. When Bluetooth is unconnected, it outputs a pulse; when Bluetooth is connected, it outputs a high level. We can determine the state from the MCU.
If only the board is used, there is no Bluetooth function.