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2.2 Hardware Overview
Data Interface 1:
Pin
Description
1
5V/9V/12VOUT (Switchable)
2
3
4
Analog Input 1
5
Analog Input 2
6
5-24VDC IN
Data Interface 2:
Pin
Description
1
5V/9V/12VOUT (Switchable)
2
3
4
5
6
RS232/RS485 (Switchable)
7
8
Pin
RS232
6
TXD
7
RXD
When both DCexternal power andbatteries are connected, externalpower will be the preferred power supplyoption.
For IOT-C502,the DCinterface canʼt be to charge battery.
IOT-C501
3.3V OUT
GND
3.3V OUT
GND
GPIO1
GPIO2
Reserved
RS485
A
B
IOT-C502
5
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