Serial Bluetooth Smart Adapter, Model: USBLE232D Datasheet V1.0
WWW.USCONVERTERS.COM
3
Rear Side:
Switch configuration:
Configuration by
CTS/RTS
Stop Bit
Parity
Role
Baud Rate
9
8
7
6-5
4
3-2-1
0: DIP Switches
1: AT commands
or app.
0: Disable
1: Enable
0: 1
1: 2
00: None
01: Odd
10: Odd
11: Even
0:Slave
1:Master
110:2400
111:4800
000:9600
001:19200
010:38400
011:57600
100:115200
101:230400
Default values are in bold
red
color.
The GATT service / tablet apps and AT commands will support more functions than the DIP switches.
RS232 Interface (male)
Pin
Signal
Description
1
N/A
2
RX
Received data
3
TX
Transmitted data
4
N/A
5
GND
Ground
6
N/A
7
RTS
Request to send
(Default)
8
CTS
Clear to send
9
VCC
Power Input
(5~27 VDC)
Power supply:
DIP Switches
▲ DCE
▼ DTE
LED Status
Description
Data LED flash
Data transmission
Data LED solid on
No data
transmission
Link LED solid on
BLE Link
Link LED flash
No Link
Data & Link LED solid
on
DFU/OTA Mode
