Chengdu Ebyte Electronic Technology Co.,Ltd.
E103-W02DTU User Manual
Copyright ©2012–2021
，
Chengdu Ebyte Electronic Technology Co.,Ltd.
8
No
Name
Usage
1
RS232
Standard DB9, hole type
2
485_A
A terminal for external RS485 device
3
485_B
B terminal of external RS485 device
4
GND
Ground wire
5
VCC
Power supply, default power supply 8 to 28V (standard 5V version can be
customized)
(5 and 6 automatically select the high voltage end)
6
DC 8
～
28V
DC power supply interface (5.5*2.5), connected to DC8~28V power supply
(standard 5V version can be customized)
7
ANT
Antenna connector (SMA-K male female threaded hole, 50Ω characteristic
impedance)
8
PWR
Power indicator, power on indicator on, power off indicator off
9
LINK
Socket connection status indicator, LINK indicator on when connected
successfully, disconnect indicator off, LINK light blinks three times when
restoring factory
10
TX/RX
The indicator blinks when data is sent or received
11
(M0)
Program
Burning emulation mode selection, default set to high; when you need to
re-download the program, please set the dip switch to low
12
(M1) Restore
When you need to restore the factory settings, please set the dipswitch to low
first, then power on and wait for the STAT indicator to blink off three times, then
restore the factory settings. The module only detects this pin when it starts up,
and setting the pin low after starting up cannot perform restoration action.
