Product images: Amazon listings
Written from the listing's specs, not from our own use · How we rate
The Smartmak 660nm Sauna Red Light keeps it simple: a sauna light with 660 nm LEDs. It is a good match for adding a red light panel to an existing sauna, at 5.8/10 on its documented specs.
| Brand | Smartmak |
|---|---|
| Category | Sauna accessories |
| Stated voltage | 110 V |
| Light | 660 nm |
| ASIN | B0FHGZKDTL |
Full listing title: Smartmak Upgraded Infrared 660 nm Red Light for Sauna Use, DIY Portable Red Light Therapy Infrared/Steam Saunas, Accessories, Only Light with Plug
| Stated voltage | 110VExact listing |
|---|
Rated from the listing's specs, no buyer reviews yet
What it's made for: adding a red light panel to an existing sauna.
Two other sauna lights close to it on our rating, each with a dated price.
That's the wavelength the listing names. We describe the hardware and make no promise about what it does for skin, sleep or muscles.
On Sep 30, 2026, that price put it in the cheaper third of the 8 sauna lights we have a recent price for.
The button opens the exact listing (ASIN B0FHGZKDTL), where today's price, stock and seller apply.
Our take
The Smartmak 660nm Sauna Red Light is about 660 nm LEDs, and it doesn't pretend to be more. No buyer reviews yet, so the Smartmak 660nm Sauna Red Light has to win you over on paper. The catch with this Smartmak sauna light: no word on the size. We'd pick it if you want a sauna light for adding a red light panel to an existing sauna; otherwise, put it next to the Almost Heaven RGB Sauna Light Bar first.
Before you add the Smartmak 660nm Sauna Red Light to your cart: check how it mounts and plugs in, because it uses 660 nm LEDs, per the listing, and the plug and cable have to stay out of the hottest air.
Check how it is powered and where the plug goes; the cable should stay outside the hottest part of the cabin or tent.
Check the maximum temperature it is rated for against your sauna's top setting.
Our accessories guide sorts the accessories that make sessions nicer from the ones that just take up space.
How the Smartmak 660nm Sauna Red Light stacks up against the closest alternative, the Almost Heaven RGB Sauna Light Bar.
| Criterion | Smartmak 660nm Sauna Red Light | Almost Heaven RGB Sauna Light Bar |
|---|---|---|
| Our rating | 5.8/10 | 5.7/10 |
| Size | Not stated | 30 in |
On our rating, the Smartmak 660nm Sauna Red Light comes out ahead (5.8 vs 5.7), so it is the one to start with.
We rate it 5.8/10 (fair). The rating comes from its documented listing alone, as no customer-review record is captured yet.
Only if its stated dimensions and materials match your cabin. Check bench depth, door thickness, panel spacing and heat rating against the listing; the same brand name or a similar photo does not prove a fit.
Its listing states 660 nm LEDs. These are the seller's figures, not our measurements: whether it fits your sauna is worth confirming first.
The power and the plug: check how it is powered and where the plug goes; the cable should stay outside the hottest part of the cabin or tent. The heat rating: check the maximum temperature it is rated for against your sauna's top setting. Worth it?: our accessories guide sorts the accessories that make sessions nicer from the ones that just take up space.
We link to the exact listing on Amazon, where today's price, stock and seller apply. It is an affiliate link, and it has no effect on the rating.
No, we haven't used it ourselves. Everything on this page comes from its listing, read line by line and weighed with our published formula.