Plant Growth LED Floodlight — 50 W / 100 W / 200 W Full Spectrum

Power Options: 50 W, 100 W, and 200 W

The floodlight is offered in three power levels. All three share the same spectrum, IP66 die-cast aluminum housing, and 220-240 V AC supply; the only difference is power and the resulting coverage area.

• 50 W — low-ceiling nurseries, shelf and tier lighting; mounted close to the canopy. Ask for pricing.
• 100 W — greenhouse day-length extension and general-purpose use; price listed on the page.
• 200 W — high mounting, wide spans, and more intensive supplemental lighting. Ask for pricing.

Spectrum: Built for the Leaf, Not the Eye

Chlorophyll absorbs light most strongly in the blue (~450 nm) and red (~660 nm) bands. The plant growth LED concentrates its energy in these two regions; the green-yellow region, where the human eye is most sensitive, remains weak — which is why the light appears pink-purple. The blue band supports compact, sturdy leaf and stem development and limits excessive seedling stretching (etiolation); the red band is where photosynthetic efficiency peaks and gains weight during flowering and fruit set.

Day-Length Extension or Photosynthetic Supplemental Lighting?

This is the distinction to clarify before talking about wattage:

• Day-length extension / photoperiod: the goal is to signal to the plant that "the day is still going." The required light intensity is low; a high mounting position suits this purpose.
• Photosynthetic supplemental lighting: the goal is for the plant to actually photosynthesize more. High intensity at the canopy is required, which calls for higher total power and closer fixture spacing.

Mounting height increases the coverage diameter, but the light intensity reaching the surface decreases with the square of the distance. Because intensity drops noticeably toward the edge of the light cone compared with the center, an overlap is left between fixtures.

Applications

• Greenhouse — day-length extension: adding 2-4 hours to the natural day during winter months.
• Nurseries and vertical farming: independent per-tier relay outputs in shelf-based production, with stage-based photoperiod planning.
• Garden and landscaping: outdoor use thanks to the IP66 housing.
• Poultry housing: the lighting schedule is managed from the same screen as Esular KümesPro temperature-humidity monitoring.

How It Differs from High-Pressure Sodium (HPS) Lamps

From an automation standpoint, the most decisive difference is not lifespan or energy use but switchability. HPS lamps need warm-up and re-strike time, and frequent switching shortens their life; the LED floodlight reaches full brightness instantly and connects directly to automation via relay/DOUT plus a contactor. Because LEDs radiate less heat, there is more flexibility in mounting distance, the IP66 housing suits greenhouse and outdoor use, and there are no consumables to replace. This comparison describes general technology behavior, not a measured comparison between two specific products.

Planning

The number of fixtures required depends on the plant species, target daily light integral, share of natural light, and mounting height. The correct quantity and layout are determined during a site survey; pricing for the 50 W and 200 W models is likewise scoped based on quantity, power tier, contactor size, and existing infrastructure.

More Information

• Plant Growth LED Floodlight & Light Automation — spectrum diagram, mounting height–coverage diameter chart, HPS comparison table, and package options.
• Light Automation Guide — adding light to the system after water and fertilizer, photoperiod planning, and field examples.

Disclaimer

No PPFD (µmol/m²/s) or DLI value is stated for this product; such figures can only be given based on a measurement report for the selected model or an on-site PAR measurement. Electrical and optical values are based on supplier declarations. IP66 means protection against water and dust; continuous submersion is outside its scope.