noun
indicator light
A small light on a device or panel that shows status, power, or a warning. Used in computing and electronics contexts.
電源が入ると、インジケータランプが緑色に点灯します。
When the power is turned on, the indicator light glows green.
Variant with interpunct; less common in running text but seen in technical contexts.
Similar meaning, but パイロットランプ often implies a small light indicating that a device is powered on, while インジケータランプ can indicate various statuses.
Loanword from English 'indicator lamp'.