Uxcell M22 110V Panel Mount Waterproof Metal LED Indicator Signal Light RedWhat is this? The panel mount indicator light with a round flat-head design. The shell is made of brass metal and an LED lamp is installed inside. This lamp has a wide range of uses mostly used in signal indicator light replacement of industrial machinery and equipment aircraft or ship dashboard amusement equipment household appliances etc. Are there any advantages of the product? Energy-saving low power consumption waterproof dustproof shock resistant corrosion-resistant durable and has a long service life. How to use it? The nut is easy to tighten and it is used with the O-ring that comes with the product the waterproof effect is better. What should I notice? Please provide a voltage that matches the rated voltage of the light.