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SANSI C21GL-C01-20W 20W 4-Head Puck Grow Light1 / 7
Product guide

SANSI C21GL-C01-20W 20W 4-Head Puck Grow Light

SANSI C21GL-C01-20W is a four-head LED puck grow light rated at 20W, with a full-spectrum listing claim and selectable 4-, 8- or 12-hour timer cycles. Its stick-on or tie-on installation approach suits shelves and cabinets, while AC-adapter power means it needs an outlet nearby.

At a glance

  • Four LED heads are listed at 20W total, with the feature text describing four 5W heads.
  • Timer choices are 4, 8 or 12 hours on a 24-hour cycle, according to the listing.
  • The listing describes a full-spectrum output and gives a 4000 Kelvin colour temperature.
  • Manufacturer copy describes adhesive and zip-tie installation for indoor shelves, cabinets and similar locations.
Price
$54.39Save 20%

Reference price: $67.99

Price checked: Nov 13, 2026

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Often bought together

Pros and cons

Pros

  • Four separate heads offer placement options around plants on a shelf or cabinet.
  • An automatic timer provides three stated daily cycle options without requiring manual switching each day.
  • The stated 20W total draws from an AC adapter, making it suitable for a fixed indoor location with nearby power.

Cons

  • The listed operation is non-dimmable, so brightness cannot be adjusted using a dimmer.
  • AC-adapter power requires access to an outlet and does not provide cordless placement.

Technical specifications

16 specifications
Identity
BrandSANSI
ModelC21GL-C01-20W
Light sourceLED
Number of light sources4
Light source wattage20 watts
ColourWhite
StyleModern
Lighting and operation
Colour temperature4000 Kelvin
Timer settingsAuto On/Off Timer (4Hrs, 8Hrs, 12Hrs)
DimmingNon-dimmable operation
Power
Power sourceAC (alternating current) adapter
Voltage120 volts
Dimensions and installation
Mounting type listedSurface Mount
Form factorRound
Dimensions and weight18.39 x 13.49 x 8 cm; 720 g
Materials
Material listedCeramic Polycarbonate (PC)

What to know before buying

Listing details to confirm

The manufacturer describes a 24-hour timer cycle beginning when set, with the selected 4-, 8- or 12-hour period on. It also claims a 25,000-hour lifespan and broad plant-growth suitability, which are manufacturer claims rather than verified performance.

What’s in the box

Included
  • Zip ties
  • 4-head puck grow light with timer on/off switch and power cord

Who is it for?

A good fit for

  • Indoor growers adding supplemental light to plants arranged on shelves, cabinets or other surfaces near an outlet.
  • Buyers who want four light heads and a recurring timer but do not need dimming.

Less suited to

  • Growers who need adjustable brightness or a cordless light.
  • Buyers seeking a stand-mounted or independently positioned lamp rather than a surface-installed puck light.
SANSI C21GL-C01-20W 20W 4-Head Puck Grow Light · photo 2
Additional product photo 2

Customer reviews on Amazon

4.5 / 5 · 44 ratings
  • 5 stars75%75%
  • 4 stars10%10%
  • 3 stars5%5%
  • 2 stars8%8%
  • 1 star2%2%

Customer feedback reports positive impressions of lighting quality and brightness. That perception may matter for buyers using the four-head, 20W listed light as supplemental indoor illumination, but feedback does not establish measured output or plant-growth results. Aggregate ratings are mostly five-star, with some lower-star ratings, so experiences are not uniformly positive.

Positive themes

  • Customer feedback describes the lights as bright and speaks positively about lighting quality.

Frequently asked questions

Does this grow light dim?

No. The listing describes it as non-dimmable, so it operates without brightness adjustment.

What timer settings are listed?

The timer choices are 4, 8 and 12 hours on a 24-hour cycle, starting when the timer is set.

How does it get power?

The listed power source is an AC adapter, so plan for an outlet within reach.

Can it be attached to a shelf or cabinet?

The manufacturer describes installation with double-sided tape or zip ties. The listed mounting type is Surface Mount.

SANSI C21GL-C01-20W 20W 4-Head Puck Grow Light · photo 3
Additional product photo 3

Alternative options

Product details in Markdown