The D2HW-C203MR is a sealed ultra-subminiature basic switch featuring an M3-screw mounting structure and a pin plunger actuator. It provides a Single Pole Single Throw, Normally Open (SPST-NO) contact configuration and is terminated with right-side molded lead wires. The switch is rated for up to 2A at 12 VDC and has a reference overtravel of 1.4 mm for reliable action. With an IEC IP67 protection rating and an operating temperature range of -40°C to +85°C, it is built for durability in harsh conditions, making it ideal for compact electronic modules and devices.