Need a small, bright indicator light for a project or control panel? This Alpinetech PLB8B is a solid industrial-style pilot light. It has a small 8mm (5/16 inch) mounting hole size, with a black anodized aluminum bezel that gives it a clean, professional look. The actual light is a bright red LED. The key spec is its voltage range: it works on both 120V AC and DC, which is super versatile for various applications. It's designed to be mounted through a panel with a thickness between 1mm and 10mm. The LED provides a clear, unmistakable ON/OFF signal and lasts forever compared to old incandescent bulbs. These are great for DIY projects, custom dashboards in cars or boats, machinery control panels, or anywhere you need a durable, reliable status indicator. Just wire it up to your power source and you're good to go. A simple, effective component for makers and tinkerers.