LevelOne FCS-1121 User Manual page 9

Extension I/O Terminal Block
The Network Camera provides an extension I/O terminal block which is used to connect
external input/output devices. The pin definitions are listed as below.
DI/DO Diagram
Pin Function
1 Power +4.5V
2 Digital Output
3 Digital Input
4 Ground
5 RS-485 -
6 RS-485 +
6