IBASE MB980 - Manual (Page 15)

INSTALLATIONS
MB980 User’s Manual 11
JP2: COM2 RS232 RI/+5V/+12V Power Setting
JP2 Setting Function
Pin 1-3
Short/Closed
+12V
Pin 3-4
Short/Closed
RI
Pin 5-3
Short/Closed
+5V
5 1
6 2