This item is a momentary push button made of durable stainless steel with waterproof design and mechanical life for 100,000 cycles. It is commonly used as vehicle horns, boat, ignition and for doorbells. It is a useful accessory great for electromagnetic starter, relay, horn button , PC power or any circuit controls. Features - Color: Silver - Material: Stainless steel - Diameter: 2.3 x 2.3 x 3.5 cm ( W x H) - A momentary push button made of durable stainless steel with waterproof design, mechanical life for 100,000 cycles. - Easy to install, screw clamp type terminals to make fitting very easy. - The and LED are separated, LED can be on all the time or only on when is on,depending on how you wire it. - Commonly used as vehicle horns, boat, ignition and for doorbells. - Widely used accessory. Can be use as a for various additional electric equipment inside and outside the . (Such as critical lights, chassis lamp, fog lamps, dome light) Package list: 1 x 16mm Mounting Hole White LED Ring Momentary Latching Pushbutton Dome Horn Stainless Steel Shell Inductrial Boat Doorbell DIY (White LED)