This Harmony 9001SK modular illuminated flush green push button has a double insulated protective collar. It comes with an integrated 24VAC/dc LED and fits into a 30mm hole. This illuminated push button with integrated LED provides an ergonomic and visual interface for controlling your machines. It mounts easily into a standard 30mm diameter panel cutout and is easy to connect to control circuits. The illuminated head and clear color make it visually easy to see from a distance. Thanks to its IP66 rating, it is shockproof, dustproof, waterproof and vibration resistant, making it ideal for use in harsh environments.