Panel Indicators | McMaster-Carr

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Signal Light with Audible Alarm

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131 Products

Signal Lights for Electrical Panels

Flat Oil-Resistant Panel Lights with Screw Terminals

Conical Oil-Resistant Panel
Lights with Screw Terminals

Build-Your-Own Oil-Resistant
Panel Lights with Screw Terminals

Make a custom panel light with your choice of light and lens cap color.

Domed Oil-Resistant Panel
Lights with Screw Terminals

Cylindrical Oil-Resistant Panel
Lights with Screw Terminals

Cylindrical Oil-Resistant Panel Lights
with Quick-Disconnect Terminals

Rectangular Oil-Resistant Panel Lights
with Quick-Disconnect Terminals

Square Oil-Resistant Panel Lights
with Quick-Disconnect Terminals

Panel Lights with Quick-Disconnect Terminals

Domed Panel Lights with Wire Leads

Conical Panel Lights with Wire Leads

Flat Panel Lights with Wire Leads

Panel Lights with Lug Terminals

Watertight Panel Lights with Screw Terminals

Rated NEMA 4X and 13 for protection from dirt, washdowns, corrosion, and oil/coolant spraying.

High-Pressure Washdown Panel
Lights with Screw Terminals

These lights are rated IP69K to withstand high-pressure washdowns, such as those in food and beverage applications.

Watertight Panel Lights with Lug Terminals

Lights have a watertight O-ring seal.

Sunlight-Visible Watertight Panel Lights

You can use these lights outdoors and they will still be visible. Rated IP67 for harsh environments.

Miniature Flashing Lights with Buzzer

Holders and Lens Caps for Miniature Light Bulbs

Install miniature light bulbs into control panels, machines, and other devices using bulb holders.

Sealed Holders and Lens
Caps for Miniature Light Bulbs

A sealing gasket keeps out oil and other contaminants.

Signal Lights for Electrical Panels

Flat Oil-Resistant Panel Lights with Screw Terminals

Conical Oil-Resistant PanelLights with Screw Terminals

Build-Your-Own Oil-ResistantPanel Lights with Screw Terminals

Domed Oil-Resistant PanelLights with Screw Terminals

Cylindrical Oil-Resistant PanelLights with Screw Terminals

Cylindrical Oil-Resistant Panel Lightswith Quick-Disconnect Terminals

Rectangular Oil-Resistant Panel Lightswith Quick-Disconnect Terminals

Square Oil-Resistant Panel Lightswith Quick-Disconnect Terminals

Panel Lights with Quick-Disconnect Terminals

Domed Panel Lights with Wire Leads

Conical Panel Lights with Wire Leads

Flat Panel Lights with Wire Leads

Panel Lights with Lug Terminals

Watertight Panel Lights with Screw Terminals

High-Pressure Washdown PanelLights with Screw Terminals

Watertight Panel Lights with Lug Terminals

Sunlight-Visible Watertight Panel Lights

Miniature Flashing Lights with Buzzer

Miniature Flashing Lights with Buzzer

Holders and Lens Caps for Miniature Light Bulbs

Holders and Lens Caps for Miniature Light Bulbs

Sealed Holders and LensCaps for Miniature Light Bulbs

Conical Oil-Resistant Panel
Lights with Screw Terminals

Build-Your-Own Oil-Resistant
Panel Lights with Screw Terminals

Domed Oil-Resistant Panel
Lights with Screw Terminals

Cylindrical Oil-Resistant Panel
Lights with Screw Terminals

Cylindrical Oil-Resistant Panel Lights
with Quick-Disconnect Terminals

Rectangular Oil-Resistant Panel Lights
with Quick-Disconnect Terminals

Square Oil-Resistant Panel Lights
with Quick-Disconnect Terminals

High-Pressure Washdown Panel
Lights with Screw Terminals

Sealed Holders and Lens
Caps for Miniature Light Bulbs