ThinkGrow LED Model-I Plus Grow Light

The ThinkGrow LED Model-I Plus Grow Light is a high-performance 720W horticultural LED fixture designed for greenhouse and single-level indoor cultivation. Its slim single-bar construction combines a built-in driver, exceptional efficiency, four independently adjustable spectrum channels, and advanced integration with TrolMaster lighting control systems.

Producing more than 1,944 µmol/s PPF with an efficacy above 2.7 µmol/J, the Model-I Plus delivers powerful horticultural lighting while maintaining a compact design that reduces fixture obstruction and simplifies installation.

4 Independently Adjustable Spectrum Channels

A major advantage of the Model-I Plus is its four independently adjustable spectrum channels:

• UV
• White
• Deep Red
• Far Red

These channels allow growers to fine-tune the spectrum and create customized lighting recipes for different stages of plant development.

Full independent control of all four spectrum channels is available when you connect the Model-I Plus to a compatible TrolMaster HCS-2 or HCS-3 controller.

Innovative V-Shaped LED Panel

The Model-I Plus features ThinkGrow's innovative V-shaped LED panel design, engineered to improve light distribution while reducing wasted light energy.

This design creates more uniform canopy coverage and lets you position the fixture closer to the crop than conventional lighting designs, while maintaining effective light distribution.

Samsung LED Technology

The Model-I Plus uses Samsung LM301B LEDs, combining proven diode technology with ThinkGrow's adjustable multi-spectrum design.

With 3,326 LED diodes, the fixture delivers high photon output while maintaining efficient electrical performance.

High-Efficiency 720W Performance

With an input power of 720 W, the ThinkGrow LED Model-I Plus Grow Light provides high-output horticultural lighting for demanding greenhouse and indoor cultivation applications.

Its main performance specifications include:

• PPF greater than 1,944 µmol/s
• Efficacy greater than 2.7 µmol/J
• Input power of 720 W
• Power factor of ≥96%
• Autosensing 100–277 V
• Current draw of 6.23 A at 120 V / 3.61 A at 208 V / 3.09 A at 240 V / 2.71 A at 277 V

A separate high-voltage Model-I Plus version is also available for 347–480 V installations.

Slim Single-Bar Design with Built-In Driver

The Model-I Plus combines its LED panel and built-in driver into a compact single-bar fixture.

It measures approximately 45.24 x 4.36 x 6.46 in / 114.9 x 11.1 x 16.4 cm and weighs approximately 22.33 lb / 10.1 kg.

Its slim construction minimizes obstruction above the canopy and makes it particularly suitable for greenhouse layouts and single-level cultivation environments where clean, efficient fixture placement matters.

TrolMaster Compatibility

The ThinkGrow LED Model-I Plus Grow Light is designed for integration with TrolMaster lighting control systems, providing centralized control, automation, dimming, scheduling, and advanced spectrum management.

Compatible TrolMaster equipment includes:

• TrolMaster Hydro-X Plus Controller (HCS-3) – provides advanced control of the Model-I Plus's four individual spectrum channels, customized lighting recipes, DLI management, and lighting group control.
• TrolMaster Hydro-X Pro Controller (HCS-2) – supports advanced four-channel spectrum control and programmable lighting strategies for ThinkGrow PLUS-series fixtures.
• TrolMaster Lighting Control Adapter T (LMA-T) – connects ThinkGrow LED fixtures with compatible Hydro-X lighting control systems.
• TrolMaster MBS-PAR Full Spectrum Quantum Sensor – integrates with the Hydro-X Plus to monitor PPFD and automatically adjust supplemental lighting output to maintain a selected light level.

The HCS-2 and HCS-3 are the controllers ThinkGrow specifies for full control of the Model-I Plus's UV, White, Deep Red, and Far Red channels.

Control Up to 256 Fixtures Per Channel

The Model-I Plus provides extensive external control, supporting up to 256 fixtures per lighting channel when used with a compatible TrolMaster lighting control system.

This allows large installations to centralize lighting management while maintaining precise control over spectrum and intensity.

Daisy-Chain Control

The Model-I Plus includes a ThinkGrow ECS-7 12 ft daisy-chain control cable, allowing fixtures to be interconnected as part of a centralized TrolMaster lighting system.

The ECS-7 is designed for ThinkGrow fixtures, including the Model-I and Model-I Plus, and connects multiple fixtures within a control network.

IP66 Protection

The Model-I Plus carries an IP66 protection rating, providing strong protection against dust and powerful water jets.

This makes the fixture well suited to humid greenhouse and indoor cultivation environments where lighting equipment may be exposed to moisture and demanding operating conditions.

What's Included

According to ThinkGrow/TrolMaster, the Model-I Plus package includes:

• 1 ThinkGrow Model-I Plus horticultural LED grow light
• 1 x 12 ft / 3.66 m 240 V power cord
• 1 x ThinkGrow ECS-7 12 ft / 3.66 m daisy-chain control cable

Key Features

• 720 W input power
• PPF greater than 1,944 µmol/s
• Efficacy greater than 2.7 µmol/J
• 4 independently adjustable spectrum channels
• UV, White, Deep Red, and Far Red control
• Samsung LM301B LEDs
• 3,326 LED diodes
• Innovative V-shaped LED panel
• Slim single-bar design
• Built-in LED driver
• External dimming and control capability
• Up to 256 fixtures per lighting channel
• Autosensing 100–277 V
• Power factor of ≥96%
• IP66 protection rating
• Rated lifetime of L90 >54,000 hours
• 5-year standard warranty
• Advanced integration with TrolMaster HCS-2 and HCS-3

Technical Specifications