Terminal
1.1
1.5
2.1
2.5
1.3
1.7
1.4
1.8
2.4
2.8
Function
External conductor connection
External conductor connection
Switched channel "Open"
Switched channel "Close"
RS485-Bus (Bus A)
RS485-Bus (Bus B)
Power supply 24 V / DC
Power supply
Ground connection
Button input S1
Button input S2
51