Check the listing for details. National Instruments NI SCXI-1167 64-Channel Relay Switch Driver Module for SCXI. Condition: Used. Listed at 175.00 USD. The SCXI‑1167 is an external relay driver, and is the ideal choice when the current and voltage requirements for relays exceed those found in existing relay modules or for relays embedded in a test system. This module comes with 64 built-in channels and helps control as many as 64 single-side stable relays. The NI SCXI-1167 ensures control of 32 2-coil latching relays. The SCXI-1167 also has the capability to drive small DC motors or other inductive relay coils, with a drive capacity up to 50 V. This module can also provide drive capacity up to 600 mA per channel by connecting to an external power supply. The SCXI‑1167 includes overcurrent, overvoltage, and fly-back protection to ensure long-life operation.