AC Infinity IONBOARD S33, LED Grow Light Board with Samsung LM301H Diodes, Deeper Penetration Full Spectrum Lighting, for Veg Bloom Indoor Plants in Grow Tents Greenhouses (3x3)
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Extended holiday returns
FREE refund/replacement until Jan 31, 2026 Learn more
FREE refund/replacement until Jan 31, 2026 Learn more
This item's return window has been extended for the holiday season: FREE refund/replacement until Jan 31, 2026
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
To initiate a return, please visit our Returns Center.
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Availability:
15 left in stock
Arrives
Tuesday, Dec 2
Color: White
Size: 3x3
Features
- Dimmable LED grow light designed with an optimized spectrum and diode positioning, to maximize plant yields.
- Utilizes full-spectrum Samsung LM301H LEDs to achieve powerful lighting optimized for all plant stages.
- Algorithmically positioned diodes create the most uniform PAR map and the deepest canopy penetration.
- Dimmer enables 0 to 100% brightness. Can connect with our smart controllers to access grow cycles, scheduling, and app.
- Constructed on a unibody aluminum board and IP-65 rated for grow environments with higher humidity and heat.
Color: White
Shape: Rectangular prism with rounded corners
Material: Aluminum
Finish Type: Silver Metallic
Light Source Type: LED
Color: White
Shape: Rectangular prism with rounded corners
Material: Aluminum
Finish Type: Silver Metallic
Light Source Type: LED
Shade Material: Aluminum
Power Source: Corded Electric
Brand: AC Infinity
Item Weight: 14.39 Pounds
Style: Modern
Voltage: 120 Volts
Brightness: 301 Lumen
Maximum Compatible Light Source Wattage: 2.4E+2 Watts
Light Source Wattage: 2.4E+2 Watts
Mounting Type: Inside Mount
Bulb Features: Dimmable, Remote Control Compatible
Color Rendering Index: 95
Number of Light Sources: 1
Are Batteries Included: No
Product Dimensions: 21"L x 21"W x 4"H
Light Output Maximum: 301 Lumens
Beam Angle: 120 Degrees
Set Name: 3x3
Manufacturer: AC Infinity
UPC: 819137022539
Wattage: 240 watts
Item Weight: 14.39 pounds
Item model number: AC-IBS33
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Tuesday, Dec 2
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Color: White
Size: 2x2
Easy to setup. Comes with everything you need to setup. Light settings can be setup in app or using the manual dial.
Reviewed in the United States on November 11, 2025 by J Mora
Color: White
Size: 4x4
These 4x4 lights are very warm. Which raised the temperature in my tent by 10 degrees. However, I guess I dont have to buy a tent heater since its at 76 degrees now, instead of 66 like it was..... Awesome! They are very bright, very very bright (running on 80 percent). So bright, my plants are mad now because they were used to less bright lights. So, I'm hoping they perk back up asap. Hopefully these lights last a long, long time for the price, but im nervous since many of the reviews claim a 9-12 month life span before failure due to overheating.. If this is the case, hopefully AC Infinity don't mind giving me new lights every 9 months for the rest of my life. Could present a problem though, since I dont really have any backup lights laying around..... Fingers crossed. As long as they last at least 20 years, I would say they are great. 😆
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Reviewed in the United States on March 8, 2025 by Ed S.
Color: White
Size: 4x4
AC infinity doesn't publish these numbers so i calculated them myself. Hopefully this saves someone else time. There are 1,020 total diodes on the ionboard S44 board. 64 of those are red (730nm & 660nm) 512 diodes are 3,000K 448 diodes are 6,500k Setting aside the red, this averages 4,652k per diode. So if you are using an app like PPFD meter app to calculate DLI and you are using the ionboard S44 then the correct light setting is either 4,000K + 10% **or** 5,000K + 10%. Unfortunately there is no option for 4,500K + 10%. This should get you roughly right.
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Reviewed in the United States on April 7, 2025 by KP Smith
Color: White
Size: 4x4
I really like AC Infinity products from tent, fans, outlets and lights, even fabric pots. My experience and my results have been excellent. Unfortunately, my Ionboard S44 quit this week after approximately 13 months of service with a break over the summer months (May-October) when I have nothing in the tent. Not sure if there is a problem with longevity, as I see some other reviews mentioning this as an issue, but I want to say that I contacted AC Infinity via their website, and within an hour, they are shipping a replacement to me. This is exceptional customer service, and while I would have preferred that my board last as long as its predecessors, which are still working, I have little to complain about.
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Reviewed in the United States on February 27, 2025 by Greg T.
Color: White
Size: 3x3
Love everything about ac affinity really good product. I have bought a lot of stuff from them but my light went out and did not know still had warranty until after the warranty so I lost all my grow because had no light. I only got half the hours out of it. It would of been nice to get a replacement out of it since only got half the life out of it. I have bought 3 lights and tons of other stuff from them.But I still love there products!
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Reviewed in the United States on February 20, 2025 by Tad Derleth
Color: White
Size: 4x4
I bought this lamp 2 years ago. Amazon as my witness. I used this lamp only to flower in a 3x3. It's an awesome lamp!!!! But it's damaged. It started flickering yesterday and today it didn't turn on. So with that been said, think about it, 400$ for 2 years and used 8 months ago year. I hate to say it, but I'm go8ng to experiment with another brand for my light. My last review update, I called AC infinity for the warranty of the lamp. And in lest than a week these guys sent me a new lamp. With this been said, You can't go wrong qith AC infinity!!!
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Reviewed in the United States on October 28, 2024 by Alex C. Alex C.
Color: White
Size: 4x4
I am writing this as someone who has the entire ACI suite- I really like the modularity, the plug/play capacity of the controller w/ peripherals, and the light penetration is amazing. I bought this particular light in April 2024 and it was amazing out of the box and helped me dial in my indoor garden. Last night I noticed a hum coming off the driver/pack on the top of the light and it clocked at about 135F. This morning, the light was off and wouldn't even register on the head unit. I reset everything and reinstalled like CS FAQ said to do. All other components (including the 3x3 board I bought a few weeks after this one) worked just fine. I contacted CS on 7/2, they've opened a ticket and it seems like they're going to back up their work. If/when they do, the rating will be 5 stars NQA.
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Reviewed in the United States on July 3, 2025 by Chan
Color: White
Size: 2x2
It is the most efficient light to date for me, so I have great hopes it will last a long time. I am impressed with how cool it is, apparently 20k lumens at first blush. Great color rendering. Dimmer 80,60,40,and 20% barely any heat at 60% and under. Comfortable to drink and hold coffee cup warmth on high. 2000 lux at 5'8' while a 320w chm is 3000 lux. It would be a more flexible, more uses, if it could dim to an additional 5% and 1%. At 20% it is too bright to put on a timer to wake up with and use in the bedroom. I need 80k lumens to work with, so it is too dim to take to work. But it is a good house chore light. It does come with one plastic led protector, but needs several and option to buy replacement, since the leds are exposed, making the light unsuited for harsh conditions. Hopefully it lasts longer than the mere months of usage that all other 100w+lights have gotten before dying.
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Reviewed in the United States on March 8, 2023 by Garden