User's Manual

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
Discoverable 4.4 mA
Connected (BLE) 3.8 mA
Connected (SPP) 12 mA
5．Transparent transmission parameters
SPP data throughput:
Android ->BT18 -> UART UART ->BT18 -> Android BAUD
14400 bytes/s 7500 bytes/s 115200
BLE data throughput:
IPhone 6 ->BT18 -> UART UART ->BT18 -> IPhone 6
Baud rate 115200 Baud rate
115200
Connection interval (ms) 15 Connection interval (ms)
15
APP Serial packet size (bytes) 300 Serial packet size (bytes)
300
Transmission interval (ms) 20 Transmission interval (ms)
50
Throughput (bytes/s) 5000 Throughput (bytes/s)
5040