The D2HW-C203MR-AQ is an electronic part manufactured by Omron, which comprises a 2A, 12V SPST-NO, 100mA 125V microswitch ROHS. This part is a single pole, single throw, normally open micro switch designed to provide short-circuit protection. It is suitable for switches, relays, and other control circuits in a variety of low-voltage applications, and it is RoHS compliant to meet the strict environmental standards set by the European Union. The contact ratings are 2A at 12V DC, 100 mA at 125V AC.