AC Infinity IONBOARD S44 LED Grow Light | 400W, Samsung LM301H, 4×4 ft

AC Infinity 400W Full-Spectrum LED Grow Light for 4×4 Coverage

The IONBOARD S44 pulls 400W from a 100–277V input across 1,024 Samsung LM301H diodes. Efficacy is 2.75 µmol/J. PPFD reaches 1,937 across a 4×4 ft canopy. The 23.62 × 23.62 in unibody aluminum board runs a full-spectrum 3000K + 5000K white mix. It pairs with 660 nm and 730 nm red supplementation. The GTS-100 driver dims 0–100% in 20% steps. IP65 sealed, fanless, and 50,000-hour rated.

How the Board Fits a 4×4 Tent Without Hot-Spotting

On a 4×4, growers typically hang the fixture 18–24 inches above canopy during veg. Tighten to 14–18 inches above canopy for flower. The 20% step dimmer is easy to ramp by hand if you don't want to plug in a UIS controller. The unibody board diffuses better than budget multi-panel fixtures at the same wattage. Daisy-chain compatibility means the same dimmer setting carries to a second fixture.

Key Features

• 1,024 Samsung LM301H Diodes: Full-spectrum 3000K + 5000K with 660 nm and 730 nm reds, algorithmically spaced across the unibody board.
• 1,937 PPFD at 2.75 µmol/J: Solid mid-tier flux for a 4×4 flowering canopy on a 400W draw.
• 20% Step Dimming Knob: GTS-100 driver ramps in 20% increments — simple to dial seedling-to-flower without an app.
• UIS Smart Controller-Ready: Plug-in port for the Controller 69 Pro and the AC Infinity ecosystem for sensor-triggered dimming and grow scheduling.
• IP65 Unibody Aluminum Board: Sealed, fanless build with no moving parts in the airflow path.

Technical Specifications