The Omron D3V161A4 is a series of miniature, long life, non-contact, SPDT Sub-miniature Basic switches. They feature low-profile and snap-action designs which make them ideal for a variety of applications. They are designed to operate in harsh environmental conditions, providing reliable and repeatable performance for a wide range of applications. Typical applications include on/off switch applications, power switches, and other precision switching needs. The D3V161A4 has a dielectric strength of 200VAC and a tolerance of 1%. They are available in a variety of options, including switches with or without a solder lug, pre-plate models, and long life models.