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Fi35 GSM Modem
Overview | Photos | Specification | Remarks

9 Pin RS232 modem Interface

Pin Type

Pin Name

Pin No

I/O

TTL

Remarks

Connection Interface

DB9

NC

1                      

 

 

RS232 standard connection to PC or other RS232 device.

RXD

2

O       

Io>15mA

TXD

3

I

Ri>5KΩ

NC

4

 

 

GND

5

I/O

Connect to Earth Line

NC

6

 

 

RTS

7

I

Ri>5KΩ

CTS

8

O

Io>15mA

NC

9

 

 


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