If you're outfitting a 2x4 tent, a mid-size commercial grow room, or scaling up from a smaller trial unit, these 240W quantum board grow lights are built for that step up. It's a single-panel quantum board LED grow light using Samsung LED diodes, delivering a PPF of 700umol/S at an efficacy of 2.9umol/J - double the light output of our 120W panel in the same efficient platform.
This is the mid-power point in our lineup where distributors and commercial growers typically standardize, because it covers a full 2x4 footprint without needing to double up fixtures.
Why Growers Choose This 240W Quantum Board LED Grow Light
Doubling PPF from 350umol/S to 700umol/S usually means doubling the footprint too - but this panel keeps efficacy flat at 2.9umol/J rather than losing efficiency as output scales, which is where a lot of mid-power boards start to fall off. Most 240W-class panels on the market drop to somewhere in the 2.4–2.7umol/J range once they push past the entry-level wattage tier.
- IP65 waterproof joint on the power connection - holds up in humid grow tents and commercial rooms alike
- 3.25kg fixture weight - light enough for standard tent hanging kits, no reinforced mounting needed
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Customizable full spectrum with far-red - spectrum can be tuned to your target growth stage, including a dedicated far-red channel for flowering
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High-quality Samsung and Osram diodes - premium chip sourcing keeps light efficacy consistently high across the panel
Key Specifications
| Spec | Detail |
|---|---|
| Model | JT1-240-QB |
| Light source | Samsung LED diodes |
| PPF | 700 umol/S |
| PPE | 2.9 umol/J |
| Output power | 240W |
| Input voltage | AC100–277V (180–528V) |
| Dimming | 0–10% dimming signal |
| Fixture dimensions | L504 x W325 x H55.5mm |
| Weight | 3.25kg (net), 3.8kg (gross, 1pc) |
| Beam angle | 120° |
| Cooling | Passive cooling, no fan |
| Max ambient temperature | 104°F/40°C |
| CRI | 85 |
| Lifetime | >50,000 hours |
| Warranty | 3 years |
| Certifications | CE, FCC, RoHS |
PPFD Test Data
We physically test PPFD point-by-point rather than relying on simulated output. Here's the real measured data for this 240W panel at three mounting heights, tested over a 1200x1200mm area.
At 30cm, canopy-center PPFD is well into flowering-stage range across the whole 2x4 footprint, not just a hot spot in the middle. Even at 60cm, average output stays close to 400umol/m²/s, which keeps vegetative and seedling stages fully covered without needing to raise or lower the fixture constantly.
240W 30cm(12") Height PPFD Test
240W 40cm(16") Height PPFD Test
240W 60cm(24") Height PPFD Test
OEM/ODM Customization
- Pictures: built from your drawings and dimension specs - matched to your exact enclosure or rack layout
- Samples: sample approval before mass production - confirm build quality and fit before you commit to volume
- Drivers & chips: choice of driver and diode (281B/301B/301H/301H EVO) - tuned to your target market's voltage and certification needs
- Spectrum: custom wavelength ratios (UV/white/blue/red/far-red) - formulated for your specific growth stage or crop
- Color: custom housing finish beyond gold/green/blue - matched to your brand identity
certification
FAQ
Q: What tent size does a 240W quantum board grow light cover?
A: It's sized for a 2x4 tent, with strong, even PPFD readings from 30cm through 60cm above canopy.
Q: Is this quantum board grow light dimmable?
A: Yes - 0–10% dimming, and the network port lets you control several fixtures from one point instead of adjusting each panel by hand.
Q: How is the 240W different from the 120W panel?
A: The 240W delivers double the PPF (700 vs 350umol/S) at the same 2.9umol/J efficacy, sized for a 2x4 tent instead of a 2x2. Both share the same housing material, cooling method, and OEM customization options.
Q: Can I order a mix of 120W and 240W units under one OEM spec?
A: Yes. Colors, branding, and diode options are consistent across our 120W–480W quantum board series, so mixed orders can run under a single OEM spec starting at 50 units total.
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