Description

RS232 Bluetooth transmission module is a newly developed efficient passive Bluetooth data transmission module developed by the company. Welcome to purchase.

Please read the following instructions carefully before use:

Features of this module: No built-in battery, no external power supply, RS232 interface data can be transferred to Bluetooth wireless transmission. The distance of Bluetooth transmission in the open zone is up to 20 meters, and theBluetooth name is SP232BLE01.

Features and features: 1. Replace the traditional RS232 serial communication cable and transmit RS232 serial data through wireless Bluetooth. 2. Can be connected to and use the standard RS232 interface device 3. It can communicate with wireless serial port with USB Bluetooth adapter, laptop, tablet, mobile phone, PDA and other devices that support Bluetooth SPP communication. 4. No built-in battery, no external power supply, RS232 interface data to Bluetooth wireless transmission, 5. The Bluetooth transmission distance in the open area is up to 20 meters. 6. This product supports a wealth of AT commands

Interface and instructions:

First, db9 female seat, used to connect RS232 terminal equipment, 9 pins, the actual use 2 feet (female TXD) 3 feet (female RXD) 5 feet (GND) Second, the meaning of the indicator light and button

Left BlueT indicator: Regular flashing, the circuit starts normally, waiting for wireless connection; After the wireless connection is successful, the indicator is off. Middle pow indicator: After the DB9 connector is connected, it is always on, and the power supply works normally. Right TTx indicator: This light flashes when the external serial terminal sends data to this module. AT SET button: When this module has Bluetooth connection, in data transparent transmission mode, press and hold this button, the module cuts to AT command mode; when this module has no Bluetooth connection, it is directly in AT command mode, this button has no effect.

Instructions: 1, module and mobile phone connection The module defaults to slave mode, in which case no connection to the phone (or other Bluetooth host) can be established without any AT command configuration. The establishment of the connection is initiated by the mobile phone or other Bluetooth host: first scan to the module and then join the connection. 2, the module and module connection When the module is connected to the module, you need to send the AT command through the serial port, configure one of them as the host, and then continue to use the AT command to initiate scanning, connection, and so on. Need to send three AT commands. Refer to the following AT command table and examples for details.

Specifications: