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Black square solar post cap light, 5.31 by 5.31 by 3.07 inches, 12 LEDs, ABS finish

SIEDiNLAR SD121B-1PK 12 LED Solar Post Light Black

SKU CH-D3TR-E09X4 MPN SD121B-1PK

A solar-powered post cap with 12 LEDs, four lighting modes and a water-ripple lens fits 4×4 to 6×6 wood or vinyl posts

  • ProductnameSIEDiNLAR
  • lamptypeLED
  • lampwattage0.3 watts
  • switchtypepush_button
  • shadedimensions5.31 in x 5.31 in x 3.07 in
  • shadematerialAcrylonitrile Butadiene Styrene
  • Solar powered with 12 LEDs and 1000mAh battery
  • Four modes including 3000K warm white and 6000K cool white
  • Fits 4x4, 5x5 vinyl and 3-1/2 to 5-1/2 inch wood posts
  • UV-resistant ABS construction withstands rain, snow and high temperatures
  • Low-profile 3.07 inch height adds safety lighting without bulk

Solar post light for decks and fences

The SIEDiNLAR SD121B-1PK is a solar-powered LED cap light designed for square wooden, vinyl or metal posts. It fits 4x4, 5x5 and 6x6 dimensions and suits garden, patio, driveway or dock installations. The black ABS shade measures 5.31 in x 5.31 in x 3.07 in and houses 12 LEDs driven by a 1000mAh battery.

Push-button control with four lighting modes

Installation is tool-free: the cap sits on the post top and is secured with the supplied hardware. A single push button cycles through steady cool white at 6000K, steady warm white at 3000K and a dynamic rotation mode that projects water-ripple patterns. The borderless transparent shade maximises dispersion. The unit is rated waterproof and UV-resistant for year-round outdoor exposure.

Buyers wanting decorative patterned light

This model suits homeowners who want ambient accent lighting with a visual pattern effect on common post sizes. It is not for buyers who need high-output security illumination, motion-activated operation, or fixtures compatible with round or non-standard post profiles. The .3 watt output is tailored to decorative use rather than task lighting.

Highlights

  • Solar powered with 12 LEDs and 1000mAh battery
  • Four modes including 3000K warm white and 6000K cool white
  • Fits 4x4, 5x5 vinyl and 3-1/2 to 5-1/2 inch wood posts
  • UV-resistant ABS construction withstands rain, snow and high temperatures
  • Low-profile 3.07 inch height adds safety lighting without bulk

Specifications

ModelSD121B-1PK
ProductnameSIEDiNLAR
lamptypeLED
lampwattage0.3 watts
switchtypepush_button
shadedimensions5.31 in x 5.31 in x 3.07 in
shadematerialAcrylonitrile Butadiene Styrene
location/usage?Deck, Patio, Yard, outdoor
listingBatteries included
careOutdoor use only, waterproof, Solar Powered, true, outdoor
finishBlack
lampquantity12
descriptionSIEDiNLAR, Acrylonitrile Butadiene Styrene, Solar Powered, LED, Semi Flush Mount, Batteries included
featuresSolar
typeOutdoor
sizedimensions5.31 in x 5.31 in x 3.07 in
widthdiameter5.31 L x 5.31 W x 3.07 H inches

Questions about this item

How can I verify the 12 LEDs are producing the water ripple patterns after installation?

Observe the post cap at night; the 12 LEDs should cycle through steady cool white at 6000K, steady warm white at 3000K, and a dynamic rotation mode that casts moving water ripple patterns onto the post and surrounding surfaces.

What is included in the package and what must be purchased separately for mounting?

The package includes the solar post cap light with integrated 1000mAh battery and 12 LEDs; no separate batteries are needed. Mounting hardware for 4x4, 5x5 vinyl or 3-1/2, 4-1/2, 5-1/2 wood posts is not included and must be sourced separately.

Which version should I choose for a 5x5 vinyl fence post versus a 4x4 wood post?

This single model fits both: it is compatible with square 5x5 vinyl posts and 3-1/2 x 3-1/2 wood posts (often called 4x4 nominal), so no other version or capacity is required for either size.

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