User's Manual

2：Product Hardware Introduction
2.1 Module shape and interface
2.1.1 OE-B01 external copper wire antenna universal Bluetooth module
2.1.1.1 Pin description
The shape of the module is as follows, with 22 external pins. Please refer to the
table for detailed pin functions.
GND
GND
RF
GND
AIO[1]
VCC
SWDIO
AIO[2]
SWCLK
RST_N
AIO[3]
UART_TX
UART_RX
WWHITE
BLUE
GREEN
RED
CWHITE
IIC_SCL
IIC_SDA
PWM5
INT0
Pin
Pin function
Detailed description
1 GND
Modular input
2 RF
The outer connecting foot of Bluetooth can be selected
RL61A1 Bluetooth Module
User manual