SAJ R5-3K-T2-15 - Page 40

R5 Series
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Figure 5.17 RS232 pin
Pin Number
Description
Function
1
+7V
Power supply
2
RS-232 TX
Send data
3
RS-232 RX
Receive data
4
GND
Ground wire
Table 5.6 USB pin port definition
1. USB interface could be externally connected with eSolar GPRS/4G module, for
operation in details please refer to eSolar GPRS/4G module Quick Installation
Guide in https://www.saj-electric.com/.
2. USB interface could be externally connected with eSolar WiFi module, for
operation in details please refer to eSolar WiFi module Quick Installation Guide in
https://www.saj-electric.com/.