The ABB ML1-100R is a 22.5 mm red pilot light operator head designed for clear and reliable signaling in control panels. This robust component carries multiple NEMA ratings—1, 3R, 4, 4X, 12, and 13—ensuring it stands up to a wide range of environmental conditions. Keep in mind, to get the full setup working, you'll need to pair this pilot light with a head, contact block holder, lamp block, and lamp. Distributed by BSP Automation, the ML1-100R is a solid choice when you need a dependable indicator that gets the job done without fuss. In the trade, some folks might casually call it a “pilot light” or simply “the indicator,” but whatever you call it, it’s a handy piece for your control gear.