Do plants need UV light?

recent studies revealed that UV-a light has a great impact on plants change growth pattern, chemistry, and transpiration processes.
Full Spectrum LED Grow Lights which include UV light as well will help plants grow as they were harvested outdoors.

Why we only design 1 IR/lamp? More IR light, growling faster?

Too much infrared light, especially in the far red end of the spectrum, may actually damage plants. Heat may discolor or kill plants, especially if those plants haven’t recently been watered. Too much infrared light may also cause plants to experience early growth spurts that reduce their health, or encourage them to flower too soon.

Recommend distance and power on time

Put the grow lights about 10″ to 16″ far away from your plants, then it won’t burn leaves. Turn on the lights 10-14 hours/day, DO NOT make your plants in photosynthetic all the time, they need rest too.
Specification:

LED quantity: 40 pcs LED color: red (620-630nm 26pcs), blue(460nm 8pcs) UV-A (4 pcs) IR ( 2pcs) Input voltage: AC 100-240V Lifespan: 35,000 hours Body material: Aluminum (heat dissipation) Net weight: 11oz/310g Warranty: 2 yearsHgrope latest version of dual heads grow lamp contains 4 UV and 2 IR bulbs, a recent study shows that UV-A can increase plants yields and plants will grow faster under UV light. According to Texas A&M University, infrared light plays an important role in blooming of flowers.
Lamp body cover & gooseneck & clip are made of Aluminium, heavy duty and well made grow lamp, grow your plants faster than under sunshine. 40 LEDs provide from UV-A to IR–all spectrums what your plants require.
Plug and play design- especially convenience for use with no installation need. 2 independent power switches allow you turn on 1 or 2 lamps according what you need.
Specifications: 2 arm totally 40 LED chips contains 26 pcs red bulbs (wavelength: 620-630nm), 8 pcs blue bulbs (wavelength: 460nm), 4 UV-A bulbs (wavelength: 380-395nm) and 2 IR bulbs (wavelength: 760nm).
Warranty: 30-days money back, 2 YEARS replacement (No-physical-damage) and lifetime customer support(Contact us whenever you have any problem with our products).

Price: $49.99