These modules have 16 relays with inputs located on rear panel header connectors and outputs bussed on the motherboard. VX16/G3 has 16 three pole relays wired out to a 50 pin header requires signal I/O mod and limits mainframe to 15 switch modules.
$535.00
1 Pole, Type S, Form A discrete relays
3 Pole Signal I/O
4×1 High Isolation Terminated w/BNC
2×1 One Pole Type S Reed w/BNC