Getting Started: Choosing the Right LED Product
How’s color temperature measured?
Color temperature is expressed in kelvin (using the abbreviation “K”), a unit of measure for absolute temperature. When the color temperature is over 5000K, it’s referred to as "cool-colored" (bluish-white). Lower color temperatures (2700–3000K) are called "warm-colored" (yellowish-white through red).
These lamps are available in 3500K, 4000K and 5000K.
What’s a lumen?
A light’s brightness is measured in lumens (abbreviated as “lm”). If a light bulb is super bright, it produces a lot of lumens. Because LED lighting delivers more lumens per watt of electricity, LEDs are a more efficient light source than incandescent bulbs. Commercial lighting fixtures are rated in lumens per watt (lm/w). These TLEDs have the best efficiency, 120-136 lm/w.