IDEC AP1M155-G is a panel indicator, specifically a pilot light. This component is designed for robust panel mounting applications within the 10mm aperture range. As a pilot light, it serves as a visual indicator of operational status or system state. Its construction and intended use are suited for industrial control panels, automation systems, and various electronic equipment where clear visual feedback is critical. The AP1 series from IDEC offers reliable performance for these demanding environments. This particular part is supplied in bulk packaging.