Invertek OPT-2-EXTIO-IN Extended I/O Plug-in Module, Digital Input x 3: 8-30VDC Input, Maximum Relay Switching Current: 6A (250VAC) / 5A (30VDC), Optidrive P2 Option, Compatibility: HVAC (ODP-2 / ODV-2) $79.20 Select
Available Now! Invertek OPT-2-ENCOD-IN Incremental Encoder Feedback, Plug In Option Module (5Volt) P2, L2 $96.00 Select