User Manual
FCC ID: 2AKS8DX-BT18
Model Name: DX-BT18
Shenzhen DX-SMART Technology Co Ltd.
DX-BT18 Dual Bluetooth Module
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Table Of Contents |
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1 Overview |
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2 Module Default Parameters ................................................................................. |
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3 Application Area.................................................................................................... |
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4 Power consumption parameters................................................................... |
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5 Transparent Transmission Parameters ................................................................ |
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6 Module Pin Description And Minimum Circuit Diagram.................................. |
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7 Pin Function Description ...................................................................................... |
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8 Detailed Description Of Function pins................................................................. |
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9 Dimensions ........................................................................................................... |
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10 LAYOUT Precautions................................................................................... |
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11 AT COMMAND................................................................................................... |
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11.1 |
Test Instructions ..................................................................................... |
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11.2 |
Get The Software Version……………................................................... |
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11.3 |
Set/Query Module Bluetooth MAC……............................................... |
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11.4 |
Set/Query Device Name......................................................................... |
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11.5 |
Set/Query - Serial Port Baud Rate.......................................................... |
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11.6 |
Set/Query Pairing PIN............................................................................ |
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11.7 |
Query - UUID…………………............................................................. |
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11.8 |
Set -Service UUID.................................................................................. |
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11.9 SetNOTIFY UUID\ WRITE UUID..................................................... |
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11.10 Set -WRITE UUID .............................................................................. |
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11.11 Disconnect The Llink…….................................................................... |
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12 Contact Us........................................................................................................... |
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1 Overview:
DX-BT18 dual-mode Bluetooth module is a dual-mode Bluetooth module (Dual-Mode) that is specially designed for smart wireless data transmission by Shenzhen DX-SMART Technology Co., Ltd. and follows the Bluetooth 4.2 standard protocol.
DX-BT18 module applies to wireless data transmission field, uses BT4.2 Bluetooth chip + PCB printed antenna design, SOC chip embedded BT4.2 Dual-Mode protocol stack, supports data transmission of Windows, Linux, Android, iOS and other systems And applications, with industrial design, transmission distance, data stability, simple operation, high cost performance and technology leading edge.
2 Module default parameters
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Bluetooth Protocol |
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Bluetooth 4.2 BR/EDR+BLE |
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Working Frequency |
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2402-248MHz |
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Communication Interface |
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UART |
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Power Supply |
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3.3V |
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Communication distance |
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30-40M (Open and unobstructed environment) |
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Physical Dimension |
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27mm x 13mm x 2.35 mm |
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Bluetooth Authentication |
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ROHS REACH FCC |
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Bluetooth Name |
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DX-BT18 |
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Pairing Code |
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1234 (The SPP agreement is valid) |
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9600 8 data bits 1 stop bit No check No flow control |
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Serial Port Parameters |
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Service UUID |
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FFE0 |
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Notify\Write UUID |
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FFE1 |
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Write UUID |
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FFE2 |
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MIN:-40 - MAX:+140 |
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Storage temperature |
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MIN:-20 - MAX:+85 |
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Work temperature |
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If you have other special function requirements, you |
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Custom requirements |
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can contact us to customize the module. |
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3 Application area:
DX-BT18 module supports BT4.2 SPP standard protocol, which can be paired with all Bluetooth-enabled desktop computers, notebooks, Andriod mobile phones and Bluetooth main module to achieve bidirectional data transmission and receiving; DX-BT18 module supports BT4.2 BLE protocol at the same time , Can connect directly with iOS device with BLE Bluetooth function, support background program resident operation.
Successful application of BT18 module:
Bluetooth wireless data transmission;
mobile phones, computer peripherals;
hand-held POS devices;
Medical equipment wireless data transmission;
smart home control;
car detection OBD equipment;
Bluetooth printer
Bluetooth Remote Control Toy
Anti-lost device, LED light control
4 Power consumption parameters:
DC-DC |
Average Current |
Unit |
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Discoverable |
4.4 |
mA |
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Connected (BLE) |
3.8 |
mA |
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Connected (SPP) |
12 |
mA |
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5 Transparent transmission parameters
SPP data throughput:
Android ->BT18 -> UART |
UART ->BT18 -> Android |
BAUD |
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14400 bytes/s |
7500 bytes/s |
115200 |
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BLE data throughput:
IPhone 6 ->BT18 -> UART |
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UART ->BT18 -> IPhone 6 |
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Baud rate |
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115200 |
Baud rate |
115200 |
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Connection interval (ms) |
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15 |
Connection interval (ms) |
15 |
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APP Serial packet size (bytes) |
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300 |
Serial packet size (bytes) |
300 |
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Transmission interval (ms) |
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20 |
Transmission interval (ms) |
50 |
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Throughput (bytes/s) |
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5000 |
Throughput (bytes/s) |
5040 |
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Characteristic Write method |
Write without |
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Response |
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Note: This table parameter is for reference only and does not represent the maximum data throughput that the module can support.
6.Module pin description and minimum circuit diagram:
7 Pin function description:
Pin number |
Pin name |
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Pin description |
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1 |
UART_TX |
Serial data output |
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2 |
UART_RX |
Serial data input |
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3 |
UART_CTS |
Vacant |
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4 |
UART_RTS |
Vacant |
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5 |
GPIO4 |
Programmable input and output port |
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6 |
GPIO5 |
Programmable input and output port |
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7 |
VPP |
VPP |
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8 |
ICE |
Firmware upgrade port |
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