1 or 2 Pole Signal I/O Module
$70.00
1 Pole, Type S, Form C, two 20 pin headers, requires signal I/O mod and limits mainframe to 15 switch modules
1 Pole, Type S relays, two 20 pin headers, requires signal I/O mod and limits mainframe to 15 switch modules
9 Pole Signal I/O w/ D9P Connector
25 Pole Signal I/O w/ D25S Connector