- (4) Ionbeam U4 UV Light Bars
- (1) Controller with Dimming & Timer
- (4) Magnetic Mounting Bars
- (1) Power Adapter (US Plug)
- (1) User Manual
AC Infinity Ionbeam U4 48W Targeted Spectrum UV Bar LED Grow Light
- Provides 48W of targeted supplemental UV coverage for spaces up to 5x5 feet
- Magnetic steel bars allow for tool-free mounting to any grow tent frame or humidity dome
- IP65 rated construction protects internal components from high moisture levels in humid environments
- 2-year manufacturer's warranty
- View More Details
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Commercial & Bulk Purchasing
We support operations & licensed facilities with volume pricing, dedicated account managers, and custom equipment consultation.
Who This Is For
- You are adding supplemental UV because your main light lacks the 365nm wavelengths needed for maximum resin density.
- You are installing targeted UVA bars because your current fixture cannot produce the stress response needed for potency.
What We Found
- The magnetic bars are much stronger than we expected, staying locked to the tent frame even when things get bumped.
- We like the mix of 365nm and 395nm since many cheaper UV bars only provide one wavelength, limiting the UV benefit.
- Having the controller attached to the cord means you do not have to reach over a hot canopy to adjust UV settings.
What Users Say
- Users who added these in the last weeks of bloom say they noticed a visible increase in resin on the leaf surfaces.
- Growers who use humidity domes say the magnetic strips make it easy to swap the lights between trays and large tents.
AC Infinity Ionbeam U4 48W Targeted Spectrum UV Bar LED Grow Light
Struggling to maximize resin production and potency during the final flowering stage? Your primary grow light might be missing a critical component.
The AC Infinity Ionbeam U4 is engineered to provide the supplemental UV lighting that standard lights lack, perfectly simulating the natural UV spectrum of sunlight. Each of the four bars delivers precise UVA wavelengths of 365nm and 395nm, scientifically proven to stimulate resin production, enhance trichome density, and strengthen overall plant development. It's the ideal companion for a full-spectrum fixture like the Ionboard S44. With its simple magnetic installation, the Ionbeam U4 integrates seamlessly into any AC Infinity grow tent frame or humidity dome. The built-in controller offers precise dimming and timer functions for customized lighting schedules, while the IP65 rating ensures durability in humid growing environments. Consuming only 48 watts, these UV bars offer a powerful, energy-efficient upgrade to elevate your harvest quality.
What's Included
Features



Targeted UV Spectrum
Delivers precise 365nm and 395nm UVA wavelengths to enhance resin production and plant development.
Integrated Controller
Built-in dimming and timer functions allow customized scheduling for optimal UV exposure.
Magnetic Installation
Steel magnetic bars allow quick, tool-free mounting to any grow tent frame or humidity dome.
IP65 Protection
Water and dust-resistant construction ensures reliable operation in high-humidity environments.
AC Infinity Ionbeam U4 Specifications
| Specification | Value |
|---|---|
| Light Dimensions | 10.98 x 1.08 in. (27.9 x 2.75 cm) |
| Controller Dimensions | 3.31 x 1.26 in. (8.4 x 3.2 cm) |
| Power Cord Length | 99.8 in. (253.4 cm) |
| Connector Cord Length | 9.1 in. (23.2 cm) |
| Diodes | 365nm, 395nm |
| LED Chip Count | 12 per bar |
| Wattage | 48 W |
| Voltage | 100-240V AC |
| Frequency | 50/60 Hz |
| Controller | Dimming Schedule Controller |
| Power Connector Type | US Plug (NEMA 1-15 Type-A) |
| Waterproof Rating | IP65 |
| Operating Humidity | 35 to 85% RH |
| Operating Temperature | 32 to 140°F |
| Life Expectancy | 50,000 Hours |
Support & Manuals
Warranty
All AC Infinity products come with a two-year manufacturer's warranty. All sales are final.
FAQs
UV lighting is most beneficial during the final 2-3 weeks of the flowering stage. We recommend using it for 2-4 hours per day during your main light cycle. The Ionbeam U4's built-in timer makes scheduling easy. Always start with lower intensity and shorter durations to allow your plants to acclimate.
No, the Ionbeam U4 is a supplemental light designed to enhance a primary grow light. It provides specific UVA wavelengths to boost resin but lacks the broad PAR spectrum necessary for vegetative and full-cycle growth provided by dedicated LED grow lights.
This 4-bar kit is designed to provide excellent supplemental UV coverage in grow tents up to 5' x 5'. For smaller spaces, consider the AC Infinity Ionbeam U2, which includes two bars.
Installation is tool-free using the included magnetic mounts. Simply attach the magnetic bars to your grow tent frame, then clip the Ionbeam U4 light bars onto the mounts. We recommend positioning the lights 18-24 inches above your plant canopy for optimal coverage.
You should avoid direct eye exposure to UV light. Always wear appropriate UV-blocking safety glasses when working in your grow space while the lights are on. Use the built-in timer to run the lights when you are not present to minimize exposure.
Yes, the Ionbeam U4 is part of the UIS platform and can be connected to an AC Infinity Smart Controller 69 Pro for centralized control and automation with your other equipment. This allows you to manage its schedule alongside your fans, main lights, and humidifiers from a single interface.
Questions About This Product?
Our specialists are happy to help. Call us or send a message and we'll get back to you within one business day (most of the time within a few hours.)
Why Trimleaf
Equipping home growers, craft producers, and commercial operations across North America since 2016.