22mm Green LED Panel Indicator with Built-in Buzzer, AC/DC 12V

This panel-mount indicator combines two alert functions in one compact 22mm unit: a bright green LED for visual status confirmation and a built-in buzzer that sounds alongside the light flash, giving both a visual and audible signal rather than relying on light alone in a noisy or poorly-lit environment. Flashing the LED in sync with the buzzer makes the alert considerably harder to miss than either a silent light or a buzzer-only alarm would be on its own.

Operating voltage is a flexible AC/DC 12V, suiting both AC-powered control panels and DC-powered equipment from the same indicator design. The housing uses PC (polycarbonate) plastic, chosen specifically for its shock resistance, holding up to accidental knocks or vibration in an industrial or workshop panel setting better than a basic unreinforced plastic housing would.

Typical applications span pilot-light duty (confirming a circuit or system is powered and running), accident or fault signaling (drawing immediate attention when something needs operator intervention), and general power-availability checks in telecom and electrical equipment panels, where a quick glance-and-listen confirmation beats having to check a meter or display screen. Installation is straightforward panel mounting, dropping into a standard 22mm cutout.

Panel builders, electricians, and makers adding a combined visual-and-audible status or alarm indicator to a control panel, machine, or equipment enclosure will find this 22mm green indicator-buzzer combo a practical, space-efficient way to get a two-sense alert from a single compact component.