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32-Channel, Electromechanical Relay Matrix/Multiplexer Switch Module for SCXI—The SCXI-1127 is a high-voltage, armature relay module that can act as a multiplexer or matrix switch. As a multiplexer, the SCXI-1127 can operate in different modes including 1-wire for large-channel-count systems, 2-wire for differential pair systems, or 3- and 4-wire modes for resistive measurements including resistance temperature detectors (RTDs) and thermistors. With SCXI front-mounting terminal blocks, the SCXI-1127 becomes a 64x1 1-wire multiplexer, 32x1 2-wire multiplexer, 16x1 4-wire multiplexer, or 4x8 2-wire matrix.