What Is Puck Lighting? | Small Fixtures, Big Uses

Puck lighting is a round, flat, hockey-puck-shaped light used for task and accent lighting. These compact fixtures commonly go under kitchen cabinets and come in low-voltage or line-voltage versions.

For the full breakdown, see our best Battery Operated Puck Lights guide.

Small, circular lights tucked under upper cabinets washing a warm glow across the countertop are a go-to for focused light exactly where needed—over a cutting board, inside a display case, or under bathroom vanities, bookshelves, and alcoves. They’re small enough to hide, bright enough to make a real difference, and simple enough that most homeowners can plan around them without an electrician’s help. The choices, however, involve specifics worth understanding before you buy. Some recess into a surface for a clean, flush look; others surface-mount wherever a shadow needs filling.

Voltage Options and What They Mean for You

Puck lights run on several electrical systems, and matching the light to your power is the biggest factor in choosing correctly. Low-voltage models run on 12V DC or 24V DC and require a transformer to step down household power. Line-voltage models run directly on standard 120V AC household circuits—no transformer needed.

The practical difference: if you’re retrofitting with access to standard junction boxes, a 120V puck like the Standard Pro LED Puck Light (4 watts, 200 lumens, 3000K) is a direct replacement. If you’re running new low-voltage wiring—often easier to snake through cabinets—12V or 24V systems give flexibility, and 24V systems tolerate cables chained in longer runs without voltage drop, per Environmental Lights’ spec sheets. That makes them ideal when one transformer feeds several fixtures across a large island or long cabinet bank.

What to Look for in a Puck Light Spec Sheet

The core specs are wattage, lumens, color temperature, and CRI. Lumens measure brightness: expect roughly 100 to 250 lumens per puck across common models. Color temperature sets mood—2700K to 3000K gives a warm white that flatters wood tones, while 4000K and up reads crisper. CRI measures color accuracy; a rating of 90 or better renders colors truthfully instead of muddy or gray. Beam angle matters: tighter angles focus on one spot, while wider 90° to 120° spreads illuminate broader surfaces evenly.

Dimming capability varies most between models. Some pucks, like certain Arkoslight fixtures, are not dimmable at all. Others work with standard low-voltage electronic dimmers. A third group—particularly RGB or tunable white models—dim exclusively through a companion app. You cannot assume a wall dimmer will work just because the box says “dimmable.”

Rated life in that range translates to years of nightly use before LEDs dim meaningfully.

Common Mistakes to Skip During Your Project

Don’t mix voltage families. A 12V DC puck and a 120V AC puck are not interchangeable; wiring the wrong one demands either a transformer or a fixture swap. Confirm what’s already in your ceiling or cabinet before you shop.

Don’t assume the mounting matches. Some pucks recess flush into a drilled hole; others surface-mount with screws or adhesive. They are not cross-compatible.

Don’t skip the dimmer compatibility check. App-only, dimmer-compatible, and non-dimmable fixtures all exist under the “puck” umbrella.

Don’t buy a wet-rated fixture for a dry location wrongly—or vice versa. The fixtures above carry ratings like IP20 or ETL dry-location listings, meaning they belong in interior, moisture-free spots—not under an uncovered porch or inside a shower stall.

Mind the line limits. A single run can only handle so many fixtures.

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