2Pcs 22mm Black Mushroom Head Push Button Switch 7/8in Waterproof Metal Item dimensions L x W x H: 1.31 x 1.34 x 1.31 inches 22mm Momentary Mushroom Push Button Switch: Press and hold to turn ON; release to turn OFF. Contact configuration: Normally Open, SPST. Brand new aluminum head push button switch. Maximum rating: 250V AC/DC, 5A. Mounting hole size: 7/8 inch (22mm). Mushroom head diameter: 1.34 inches (34mm). Suitable for application voltages: 5VDC, 12VDC, 24VDC, 36VDC, 48VDC, 110VAC. Constructed from high-quality metal. Mechanical lifespan: 1,000,000 cycles. Features IP65 waterproof protection for use in damp or dusty conditions. Simple installation with screw terminals, eliminating the need for soldering and allowing easy connection to your circuit. Package includes: 2 push button switches. Commonly used for controlling LEDs and circuits in automotive, RV, marine, truck, household, coffee machine, industrial, and medical equipment applications.