Prolight Horticulture LED Series

Weitai Technology has established a comprehensive product portfolio for plant growth LEDs covering both mid-power and high-power application scenarios. These correspond to the 3030 package series (0.5W class) and the 3535 package series (3W class), respectively. Both series offer three core wavelengths-450nm (blue), 660nm (red), and 730nm (far-red)-fully addressing the spectral requirements across all stages of plant growth.

The 3030 mid-power series utilizes a standard package size of 3.0×3.0×0.55mm, making it a mainstream choice for plant grow bars and panel lights. Key models include the Royal Blue PW2R-FFDE (450–460nm), which delivers an optical power of 220mW at 350mA, a PPF of 0.93 μmol/s, and a photon efficacy of 2.00 μmol/J; the Crimson PW2R-FFME (650–670nm), with an optical power of 110mW, a PPF of 0.75 μmol/s, and a photon efficacy of 2.38 μmol/J; and the Cherry Red PW2R-FFEE (720–740nm), with an optical power of 100mW and a PPF of 0.69 μmol/s. It should be noted that while 730nm far-red light falls outside the 400–700nm Photosynthetically Active Radiation (PAR) range-meaning its PPF is measured differently than that of red and blue wavelengths-it enhances overall photosynthetic efficiency in practical applications via the Emerson effect and helps regulate plant height and internode spacing. For leafy vegetable plant factories and tissue culture seedling lighting, 450nm blue light and 660nm red light are typically combined in ratios ranging from 1:4 to 1:6.

The 3535 high-power series features a package size of 3.45×3.45×1.9 mm and incorporates a lens structure; with a maximum drive current of 800 mA, it is suitable for high-density top lighting and greenhouse supplemental lighting applications. The Royal Blue model PK2N-3LDE-HSD (448–458 nm) delivers an optical power of 730 mW at 350 mA, with a PPF of 2.71 μmol/s and a photon efficacy of 2.67 μmol/J (Power Bin T: 710–765 mW). The Crimson model PK2N-3LME-HSD (650–670 nm) offers an optical power of 435 mW, a PPF of 2.38 μmol/s, and a photon efficacy of 3.34 μmol/J (Power Bin R: 425–450 mW); this efficacy level is highly competitive within its class, directly impacting the electricity costs and return-on-investment (ROI) periods for commercial growers. The Cherry Red model PK2N-3LEE-HSD (720–740 nm) provides an optical power of 350 mW, a PPF of 2.11 μmol/s, and a photon efficacy of 2.94 μmol/J (Power Bin P: 315–355 mW). In greenhouse supplemental lighting, 730 nm far-red light is frequently used for "end-of-day" (EOD) lighting; by extending the photoperiod, it regulates flowering in short-day plants or promotes vegetative growth in long-day plants, serving as a core method in light quality control technology.

The entire series of Weitai (WTC) horticultural LEDs is binned and shipped based on PPF (Photosynthetic Photon Flux) rather than the luminous flux (lm) binning typically used for general lighting LEDs. This approach better aligns with the practical requirements of the horticultural lighting industry, as plant responses to light are based on the number of photons rather than the brightness perceived by the human eye. PPF binning ensures consistent photon output across LED batches-a critical factor for plant factories requiring precise control over light recipes. Luminaire manufacturers can leverage this binning data for accurate optical design, thereby preventing lighting non-uniformity caused by component variations.

Furthermore, the entire product series has passed LM-80 reliability testing. LM-80 is the standard established by the Illuminating Engineering Society (IES) of North America for measuring LED lumen maintenance; it involves continuous operation testing for over 6,000 hours at specified temperatures (such as 55°C and 85°C) to project the LED's L70 lifespan (the time it takes for luminous flux to decay to 70% of its initial value). The LM-80 test data for Weitai's horticultural LEDs provides a reliable basis for assessing luminaire lifespan and demonstrates the company's technical expertise in product reliability.

Weitai Technology's technical capabilities in the field of horticultural lighting have gained widespread recognition in the international market. To date, the company has established collaborative development partnerships with luminaire manufacturers and academic research institutions across multiple countries, including the United States, Sweden, Finland, the Netherlands, and Belgium.