MEIZHI Reflector-Series R450 450W Full Spectrum Review

Editor rating

4.6/5 on July 21, 2017

User's rating

168 reviews


  • Uses Epistar LED chips.
  • Power-efficient build.
  • Compact reflector design.
  • Two selectable lighting modes.
  • Easy to install.
  • Lifespan averages 50,000hours.
  • Easy to use.
  • PAR rating averaging 779umol.


  • Improper use can discolor foliage.
  • Lacks a built-in energy storage and during power blackouts, it cannot work.


Meizhi-R450 is an energy-efficient, 450-watt plug-and-use LED-based grow light that uses 90 high-grade Epistar LED chips to shine 12-band full-spectrum 450nm, 630nm and 660nm wavelength light to crops. It can support crop development through the crop cycle.

Meizhi-R450 is an energy-efficient, 450-watt plug-and-play LED-based grow light. It uses high-grade white-light and infra-red Epistar LED-chips to provide full-spectrum light to plants. It is designed as an alternative to the 600-watt HID lights.

It uses a uniquely-set reflector to focus light onto the foliage and minimize light dispersal. Its LED panel houses 90 chips whose total power rating is 450watts, but in actual usage, the total power drawn is about 200watts, and this is due to the ingenuity of the circuitry and use of energy-saving technology to power the unit. The merits and demerits of this grow light are listed below, along with a concise verdict.

Overview of MEIZHI Reflector-Series R450 features

Meizhi-R450Meizhi-R450 is an energy-efficient, plug-and-use LED-based grow light that is designed to have an exceptionally low heat signature. Its front-facing LED panel has 90 Epistar LED chips arranged into 5 rows, with each row containing 18 chips. Each chip can draw up to 5 watts of electrical power, and this gives the entire unit a maximum power draw of 450 watts. This model is designed and built by Meizhi, which designates it as model R450.

This model is designed as a substitute or alternative to 600-watt HID (high-intensity discharge) lights, including high-pressure sodium (HPS) and metal halide lamps. This is because the model has the same luminous intensity as any 600-watt HID lamp.

This unit is compactly-designed and it measures about 19.6inches in length and 10.7inches in width. Its height is about 8.7inches. It weighs only 8 pounds, which makes it portable enough and lightweight enough to be suspended above crops using rope or cable hangers. It is recommended that the lamp must be 18inches above the top-most canopy of the crops. At the 18-inches height, the lamp can illuminate an area covering 3.5feet by 2feet.

It features a 120-degree reflector panel that is well-placed to reflect 100-percent of the light that falls onto its surface. This serves to minimize light dispersal hence ensuring that the LED-emitted light wholly showers the foliage and is not wasted by falling directly on the walls.

This model is designed to support daisy chaining, which means several units of this model can be connected together into a linear chain just by interlocking them together using specialized connectors. This serves to increase the maximum coverage area. It also allows you to use the multiple pieces of this product to sustain plant growth in a relatively large indoor farm.

This unit features 2 selectable switches; the veg and bloom switch. The veg switch activates this grow light into the veg mode, and only one fan operates. If the bloom switch is on, the flowering lighting mode is activated and both fans run together. As expected, the flowering mode consumes more power than the veg mode.

Its lifespan is estimated to be around 50,000hours.

For what kind of use this product is suitable for?

This product is built to support crop cultivation in greenhouses, indoor gardens, and roofed horticulture farms. It cab be used by all hobbyists from plant breeders to aqua-farmers, horticulturists and specialist farmers.

How this product works?

Meizhi-R450 operates an an energy-efficient transducer that minimizes energy wastage while optimizing the lighting quality. The core transducer components in this model are the 90 LED chips whose operation depends on the integrity of the supporting circuitry. The unit requires AC power whose voltage range is between 110 to 240volts. This electrical power goes into the LED chips where it is converted into light with varying wavelengths, with the most important wavelengths being the 450, 630 and 660 nanometers wavelength.

This model is shipped along with a flexible power cord.

Price-Benefit Analysis

Compared to other LED-based grow lights that consume 450-watts, Meizhi-R450 stands out as one of the most favorably priced item among its competitors. Likewise, it features a good design, and is made from high-quality materials; and it performance is exceptionally good for its power rating. Therefore, this model has a superb performance-to-cost ratio.

Technical specifications of R450

-Color: Blue
-LED Brand: Epistar
-LED Quantity: 90pcs
-Spectrum: 450~475nm 620~630nm, 650~660nm, and white
-Par Value: 779umol
-Lumen: 11595Lm + -5%@AC110V 11632Lm + -5%@AC220V
-Power Draw: 195W + -5%@AC110V 192W + -5%@AC220V
-Coverage: 3.5ft*2ft
-Light Size: 400*210*70mm(15.7″x8.3″x2.8″)
-Package Size: 496*266*126mm
-Net Weight: 2.7KG
-Gross Weight: 3.5KG
-DB: 53db
-LED Angle: 120°
-Input Voltage: AC85-265V
-Amp: [email protected] [email protected]
-Frequency: 50-60HZ
-Lifespan: 50000-100000hours
-CE RoHS Certificate

What customers say about R450?

The product marketed online primarily through, and its web-page in this trading portal shows that customers favorably review it. Most customers appreciate its low cost and high performance profile, while others love it for being an easy-to-use artificial lights.

What kind of guarantee manufacturer gives for R450 model?

The product benefits from a 90-days warranty guaranteed by Meizhi.

Final Recommendation

Meizhi-R450 is an energy-efficient, 450-watt plug-and-play LED-based grow light that uses 90 high-grade Epistar LED chips to shine 12-band full-spectrum 450nm, 630nm and 660nm wavelength light to support crop development. If you want a reliable 450-watt grow light, consider purchasing this product.

Hopefully, this’s review was helpful! If you have any question or comments about the product, please leave them below. Be sure to read our other plant light reviews and find out more useful information about led grow lights from the front page!

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