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D. Right Side Panel
2.2 Dimensions (mm)
2.3 Connectors
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SIM and Reset Button Holder
10
Serial Port&I/O Ports
PIN
RS232
RS485
1
---
2
GND
3
---
4
TXD
5
---
6
---
7
---
8
RXD
Note: For -RS485 model, RXD--->A, TXD--->B.
R75 Quick Start Guide
DI
DO
---
IN
---
---
GND
---
B
---
---
---
---
---
---
---
COM
---
---
OUT
A
---
---
---
---
---
Description
Digital Input
Ground
Data -
Transmit Data
Common
Ground
Digital Output
Data +
Receive Data
5
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