IDEC AP1M155-A is a panel mount pilot light designed for clear visual indication in industrial control panels and automation systems. This component features a 10mm mounting diameter for standard panel cutouts. It operates as a momentary contact switch, suitable for applications requiring on/off status signaling. The AP1M155-A is commonly utilized in manufacturing, building automation, and control equipment where reliable visual feedback is critical. Packaged in bulk for efficient integration into larger production runs.