• The package contains 4 red indicator lights, ideal for multiple needs in industrial and domestic environments. • They operate with a nominal voltage of 12 V DC and feature a high-durability, reliable neon bulb. • These panel-mounted indicator lights provide a clear visual indication of the status of indexing, anticipation, and emergency signals, making it easier to monitor electrical systems. • Installation is simple: just drill a 12 mm hole and use the included screw ring to attach the light to a 12V DC power source. • They are widely used in sectors such as electric power, telecommunications, machine tools, motors, and household appliances, providing safety and visual control for equipment.