XN2 Series Rectangular Connectors Omron Electronics XN2 Rectangular Connectors are easy-wire connectors with e-con specifications, ideal for industrial components and connecting sensors. Omron XN2 series uses industry-proven spring clamps for wiring and accepts any wire size from AWG28 (0.08mm2) to AWG20 (0.5mm2). Omron Electronics designed the XN2 series for easy wiring, rewiring, and repair with no special tools required.