User's Manual

NINGBO YOUWON TECHNOLOGY ELECTRONICS CO., LTD
ADDRESS ：#928, XUEYUAN ROAD, LUGANG VILLAGE, GAOQIAO TOWN, NINGBO
TELEPHONE：[phone] FAX：[phone]
（3）
四、pin define
3cm
4cm
function
RS232 pin name
TTL 485
1
VCC dc power input（+4—10V）
2
D-OUT
data output /485 A
3
D-IN
data input/485 B
5
GND
GND
7
P_DOWN Sleep switch(high:on,low:off）
8
CTS
current control
4,6,9
NC
NO USE
R
antenna
Shield
正
RS232
Write code hole