The Omron B3W-1053H is a tactile switch with a square design and measures 12mm. It is a single-pole, single-throw (SPST) switch, normally open (NO), with an operating force of 160 grams-force. This switch is rated for 50mA at 24VDC, ensuring reliable performance in low-voltage applications. Typical uses include consumer electronics and industrial equipment where tactile feedback is essential.