AG-140 Under Canopy LED Grow Light Bar - 140W, 420-455 µmol/s, 120-277V

Sold individually. 8 bars per case.

The AG-140 is a 140W LED light bar built to light the lower canopy, where top lighting doesn't reach. It evens out light and VPD from the top of the plant to the bottom, so lower bud sites develop fully instead of staying small and airy. Adding AG-140 bars as under-canopy supplemental lighting can increase yield by up to 30%. A 2025 peer-reviewed study measured up to +24.58% and +29.95% yield gains from under canopy lighting (read the study).

Compare every option in under canopy lights.

Three ways to use it

• Under canopy: Supplemental light for lower bud sites.

• Modular top light: Use 4 to 8 bars over a 4x4 ft area, depending on the intensity you need.

• Greenhouse supplement: Attach to struts or poles to make up for low-DLI days.

Choose your spectrum

• White = 3K Full Phase (AG-140LW): 420 µmol/s at 3.0 µmol/J. All-purpose, veg through flower.

• Red = R80 Red Enhanced (AG-140LR): 455 µmol/s at 3.25 µmol/J. The usual choice for flowering rooms and the most output per watt.

Built for wet grow rooms

IP65-rated for washdown and IPM spraying. ETL listed to UL 8800, DLC listed, with a rated lifetime of L90 > 54,000 hours.

Simple to install and control

• One connection carries both power and data, and bars plug directly into each other end to end, so they daisy-chain without extra wiring.

• 0-10V dimming from 0 to 100%.

• Works with the Grower's Choice Master Controller (up to 100 AG-140 bars directly, 50 per side, and up to 1,000 bars per group thanks to the AG-140's built-in signal booster) and with Trolmaster Hydro X using a Trolmaster LMA14 cable.

Built for commercial cultivation

• Built-in signal booster: every AG-140 has a built-in signal booster that keeps the dimming signal strong across large installations. The Master Controller drives up to 100 bars directly (50 per side), and the booster lets one group run up to 1,000 bars, for precise dimming with no signal "ghosting".

• Fully modular: under canopy or top light, indoor or greenhouse.

• Enhanced sealing and rugged build: IP65, reliable even in harsh, wet environments.

• Premium-grade wiring and connectors.

Specifications

• Power: 140W

• Coverage (per bar): flower 4 x 2 ft

• Input voltage: 120-277 VAC, 50/60 Hz

• PPF: 420 µmol/s (Full Phase) / 455 µmol/s (R80 Red)

• Efficacy: 3.0 µmol/J (Full Phase) / 3.25 µmol/J (R80 Red)

• Dimming: 0-10V

• Ingress rating: IP65

• Certifications: ETL listed to UL 8800, DLC listed

• Lifetime: L90 > 54,000 hrs

• Dimensions: 45.8 x 3.1 x 2.5 in

• Weight: 4.85 lb (2.2 kg)

• Warranty: 5 years

Daisy-chain limits (bars per powered run)

• 120V: up to 10 bars (1.24A each)

• 208V: up to 19 bars (0.69A each)

• 240V: up to 22 bars (0.60A each)

• 277V: up to 24 bars (0.56A each)

Nominal values. Branch-circuit protection and cord sizing must comply with local and national electrical codes.

What's included

1 x AG-140 LED bar. Power cord, jumper cords and controller are sold separately.

You'll also need:

• AG-140 Power Cord (8 ft): one per powered run, in 120V, 240V or 277V

• AG-140 Jumper Cord (3 ft): optional, for spacing bars apart in a chain (bars also plug directly into each other)

• Master Controller: optional, for dimming and zone control

Want everything in one box? The AG-140 Under Canopy LED Kit (2 or 4 bars, Full Phase or R80 Red) include the bars, power cord, jumper cord and stands, with or without the Master Controller.

FAQ

How many AG-140 bars can one controller run?Up to 100 bars directly from one Master Controller (50 per side). Because every AG-140 has a built-in signal booster, one group can run up to 1,000 bars with a reliable dimming signal, which makes it a fit for large commercial rooms and greenhouses.

Does the AG-140 come with a power cord?No. The bar is sold on its own. Add one AG-140 Power Cord per powered run, choosing 120V, 240V or 277V to match your circuit. Or choose a 2- or 4-bar kit, which includes the cords and stands, with an optional Master Controller.

How many AG-140 bars can I daisy-chain?Up to 10 bars at 120V, 19 at 208V, 22 at 240V and 24 at 277V per powered run. Bars plug directly into each other end to end; use a 3 ft jumper cord wherever you want space between bars.

Should I choose Full Phase or R80 Red?R80 Red has the higher output (455 µmol/s at 3.25 µmol/J) and is the usual choice for flowering rooms. The 3K Full Phase gives a balanced white spectrum suited to every growth stage.

Is the AG-140 waterproof?It is rated IP65 for washdown and IPM spraying, so it holds up to normal grow-room conditions, including irrigation.

Can I use a Trolmaster controller?Yes. The AG-140 works with Trolmaster Hydro X using a Trolmaster LMA14 cable. It also uses standard 0-10V dimming.

What's the warranty?5 years.

What about shipping and returns?Orders ship from California; shipping is free within the contiguous U.S. Unused items in their original packaging can be returned within 14 days with an approved RMA; a 25% restocking fee applies and the customer pays all return shipping. See our Return Policy for details.

Download the spec sheet (PDF)