The NL277K2A is a neon indicator light from the 277 series, designed for visual signaling in electronic panels. It features a 14.6 mm diameter chrome-plated brass bezel and is designed to mount in a 10.0 mm panel cutout with a maximum thickness of 12.0 mm. This indicator operates on a voltage of 105-130V, produces an amber color, and uses 2.8 mm tab terminals for connection. With a typical lifespan of 25,000 hours, it provides a durable and reliable status indication for industrial controls, appliances, and various equipment.