32-Channel, General-Purpose Switch Module for SCXI—The SCXI‑1166 is a general-purpose switching module with independent single‑pole double‑throw (SPDT), also called Form C, latching relays with very low on-resistance and low thermal offset. These relays are suitable for switching, routing, and controlling medium-level signals. Each channel has a normally closed (NC), normally open (NO), and common (COM) terminal.