Led Grow Light Key Features 2

Question 1

What unit measures the total amount of photosynthetically active light a fixture delivers per second?

Accepted Answer

PPF (μmol/s)

Answer

Lumens

Answer

Lux

Answer

Watts

Question 2

Which metric tells you how much PAR light reaches a specific point on the canopy?

Accepted Answer

PPFD (μmol/m²/s)

Answer

PPF

Answer

CRI

Answer

Color temperature

Question 3

A grow light's efficiency is best described by which spec?

Accepted Answer

Efficacy in μmol/J

Answer

Total wattage

Answer

Lumens per watt

Answer

Beam angle

Question 4

Which wavelength range is most associated with driving vegetative and flowering photosynthesis in PAR?

Accepted Answer

400–700 nm

Answer

315–400 nm

Answer

700–800 nm

Answer

200–280 nm

Question 5

What feature lets a grower change a fixture's brightness over the grow cycle?

Accepted Answer

Dimming control

Answer

Heat sink size

Answer

IP rating

Answer

Mounting bracket

Question 6

A 'full-spectrum' LED grow light primarily aims to mimic what?

Accepted Answer

Natural sunlight

Answer

Moonlight

Answer

Incandescent bulbs

Answer

Ultraviolet sterilizers

Question 7

Which spec indicates how a fixture's light intensity spreads across the grow area?

Accepted Answer

Light footprint / coverage area

Answer

Color rendering index

Answer

Power factor

Answer

Surge rating