Interlogix VR4930WDM Series - Manual (Page 2)

GROUND
DATA INPUT
RS - 232 DATA
7
6
5
4
3
2
1
RS - 422 / 4-WIRE
RS-485 DATA
7
6
5
4
3
2
1
+ DATA INPUT
- DATA INPUT
DATA OUT
2-WIRE RS-485 DATA
7
6
5
4
3
2
1
+ DATA INPUT /
OUTPUT
- DATA INPUT /
OUTPUT
+ DATA OUTPUT
- DATA OUTPUT