White moonlight LED lamp for swimming pool, solar powered, with magnet or adhesive
Solar underwater white pool light — the only patented system that installs on a full pool wall in under 5 minutes, with no wiring, no drilling, and no draining. Warm moonlight glow. Powered entirely by built-in solar cells: OSRAM LED 320 lm, 3200 mAh battery, up to 7 hours of runtime per night. U.S. Patent No. 10132455.
Works in chlorinated and saltwater pools. Choose your mount: Magnet (liner & steel-wall pools) or Adhesive (tile, fiberglass, plaster, polyester). No electrician needed.
If you want pool lighting that looks like something out of a luxury resort — without the $1,500 electrician bill — the Moonlight UWST1 solar underwater pool light is exactly what you're looking for. Warm white light, soft and diffused, radiates across the water creating a natural moonlight glow. No wiring. No drilling. No draining. Installs in under 5 minutes on a full pool.
This is a fixed, wall-mounted underwater spotlight, not a floating toy. Powered entirely by its integrated solar cells, it charges through the water all day and activates automatically at dusk. U.S. Patent No. 10132455 · European Patent EP 3118392. Made in Europe. In production since 2015, sold in over 20 countries.
The alternative to a $2,000 pool light replacement
When a traditional wired pool light fails in the US, replacing it typically costs $500–$2,000 in parts and labor — plus draining the pool, cutting the shell, and pulling permits for electrical work. The Moonlight UWST1 bypasses every one of those steps. It adheres directly to the submerged wall — tile, fiberglass, plaster, vinyl liner, polyester, painted concrete — and works the same day you install it. Zero installation cost. Zero electricity cost. Zero maintenance.
UWST1 Moonlight Technical Specifications
| Model | UWST1 Moonlight |
| Light color | Warm white (moonlight effect) |
| LED | OSRAM Opto high-power encapsulated |
| Brightness | 320 lumens |
| Coverage | 160–215 sq ft (15–20 m²) per unit |
| Solar cells | Polycrystalline, integrated |
| Battery | Lithium-ion, 3200 mAh |
| Operating voltage | 3.8 V |
| Runtime | Up to 7 hrs/night (1 hr sun = 1 hr light) |
| Auto on/off | Yes — built-in dusk/dawn sensor |
| Diameter | 12.1 in (308 mm) |
| Thickness | 0.39 in (10 mm) |
| Weight | 2.4 lbs (1.1 kg) |
| Operating temp | 32–122°F (0–50°C) |
| Water type | Chlorinated and saltwater pools |
| Mounting | Magnet – UWST1M (liner/steel walls) or Adhesive – UWST1A (tile, plaster, fiberglass, polyester) |
| Pool robot compatible | Yes |
| Rim color options | White or Marine Blue |
| Patent | U.S. Pat. No. 10132455 · EP 3118392 |
How many lights do I need?
Each unit covers approximately 160–215 sq ft of water surface. General sizing guide:
- Pool up to 15 × 10 ft → 1 light
- Pool 25 × 12 ft to 33 × 16 ft → 2 lights
- Pool 40 × 20 ft → 3 lights
Magnet vs. Adhesive — which version is right for you?
- Magnet – UWST1M: for above-ground liner pools with galvanized steel walls. Snaps on and off without tools or residue. Ideal for seasonal removal or repositioning.
- Adhesive – UWST1A: for any pool surface — tile (mosaic/gresite), plaster, fiberglass, polyester, painted concrete, PVC liner. Includes a syringe of special underwater-cure polymer. Bonds underwater while the pool is full — no draining required.
In both cases: install at 8–12 inches depth on the wall that gets the most direct sun during the day for maximum charging. The light can stay installed year-round, even under a winter pool cover.
Frequently Asked Questions
Do I have to drain the pool to install the Moonlight?
No. The UWST1 Moonlight installs directly on the submerged pool wall while the pool is completely full. The adhesive version (UWST1A) uses a specially formulated polymer that cures and bonds underwater — no draining, no surface preparation, no waiting period. The magnet version (UWST1M) snaps onto steel liner walls instantly with no adhesive at all.
Can I use this to replace a broken wired pool light without an electrician?
Yes — this is one of the most popular use cases among US buyers. If your existing wired pool light has failed and you want to skip the $500–$2,000 replacement cost, the Moonlight UWST1 is a fully independent alternative. It requires no connection to your pool's electrical system, no conduit, and no permits. Mount it on the wall, let it charge, and it runs automatically every night from that point on.
Does it work in a saltwater pool?
Yes. The Moonlight UWST1 is rated for both traditional chlorinated pools and saltwater (NaCl) pool systems. The sealed housing and underwater adhesive are specifically engineered for long-term submersion in both chemical environments without degradation.
Will my robotic pool cleaner dislodge it?
No. The adhesive bond and magnetic hold are both designed to withstand contact with robotic pool cleaners including Dolphin, Polaris, and Hayward models. You do not need to remove the light before running your robot — owners consistently report the light stays securely in place during automated cleaning cycles.
How bright is it compared to a wired pool light?
At 320 lumens through a high-power OSRAM encapsulated LED, the Moonlight delivers brightness comparable to standard residential wired pool fixtures. Verified users on pool enthusiast forums describe it as "just as bright as electrical pool lights." The warm white color temperature creates a soft, diffused glow rather than a harsh spotlight effect — intentionally designed to evoke natural moonlight on the water surface.
What is the difference between the Moonlight (white) and the DeepBlue (blue)?
The Moonlight (UWST1) emits warm white light designed to create a soft, natural moonlight effect — ideal for relaxed evening swims and understated poolside aesthetics. The DeepBlue (UWST1BLUE) emits intense blue light for a more dramatic, vivid visual effect. Both use identical hardware: OSRAM LED at 320 lm, 3200 mAh lithium battery, up to 7 hours of runtime, U.S. patented design.
