DemeterGM

LED Grow Lights

Grower LED Light

Full-spectrum light engineered for every stage of indoor cultivation — from seedling through flowering. Built to get more yield from every plant, every cycle.

From $485 excluding tax

DMJK-3.0I Grower LED Light product photo

Designed for growers who expect more.

As an indoor grower, your passion is nurturing each plant to its fullest potential. You understand the significance of optimal growth conditions, and you're committed to maximum yield.

The DMJK-3.0I delivers on that. Efficient, durable, and engineered to reduce grow time by up to five days compared to traditional lighting — so you can cycle more plants, more reliably.

Features

What makes it different.

Premier light chip, PPE 3.5 µmol/s

Powered by a top-tier horticultural light-emitting chip — a meaningful jump over typical grow-light efficacy.

Anti-vulcanization lens

Uniform light distribution across a wide exposure area, so every plant gets even coverage.

Full-spectrum output

Engineered to mimic natural sunlight across four wave bands for robust plant production and premature yield increases.

Aviation-grade build

Anti-UV paint and aviation aluminum resist rust and corrosion for long service life.

0–10V dimming, 100-lamp chain

Interconnect up to 100 lamps with manual dimming control for a customizable grow environment.

IP66 waterproof

Rated for harsh and humid growing conditions.

ETL, UL & DLC certified

Complies with ETL, UL 1598, UL 8800, CSA C22.2 No. 250.0 safety standards and DLC energy efficiency standards.

Modular design

Detachable waterproof input lines for easy transport, maintenance, and installation.

See the Difference

Proven results in real grows.

Plant comparison: DemeterGM LED vs competitor
Side-by-side comparison: plants grown under DemeterGM LED versus a competitor light.
Full spectrum output chart
Full-spectrum output measured across the photosynthetically active radiation (PAR) range.
LED light in use LED light installation detail

Technical Specifications

By the numbers.

Model
DMJK-3.0I
Voltage
120–277 V
Power
850 W
Amps at 120V
6.6 A
Amps at 277V
2.9 A
Frequency
50 / 60 Hz
PPE
3.5 µmol/s
Weight
42 lbs
Waterproofing
IP66
Dimming
0–10V, up to 100 lamps
Warranty
5 years (limited)
Certifications
ETL, UL 1598, UL 8800, CSA C22.2 No. 250.0, DLC

Recommended: pair with CO₂ supplementation at 100% output for enhanced plant growth and bud formation.

Get more information.

Tell us about your grow space and we'll recommend the right lights and layout for maximum yield.