Two model options: RU2S-D12 (2NO+2NC DPDT, 10A contacts) and RU4S-D12 (4NO+4NC 4PDT, 6A contacts), both 12VDC coil with mechanical lock test lever; Standard 8-pin plug-in terminal design, matched with dedicated relay socket for DIN rail mounting in control cabinets; Built-in anti-reverse diode and LED operation indicator; lock rod allows manual circuit test without energizing the coil; Silver alloy contact material, stable switching performance, rated withstand voltage 250VAC / 30VDC, long mechanical service life up to 10 million cycles; Compact modular structure, CE, UL, RoHS certified, widely used for PLC output, sensor signal switching, automation equipment control circuits