Acrosser AR-B1851 - Manual (Page 12)

AR-B1851 User’s Guide
AR-B1851 12
• JP4 : Select COM4 is RS232 or RS422/485
• JP6 : Select LCD Voltage
JP4 Description
1-2 RS232
2-3 RS422/485
JP6 Description
1-2 +3.3V
2-3 +5V