Ketra makes a cohesive system of lighting fixtures, controls and software that allows for easy deployment of Natural Light. Just like sunlight, it automatically transitions throughout the day. Just like firelight, it delivers soft, warm light once it’s dark out. Ketra lighting uses the model created by nature and delivers light that’s identical in color and intensity to these natural sources. The result is interior lighting that’s healthier, makes people and places look better, and feels right no matter what time of day (or night) it is. Only Ketra creates this precise, consistently shifting Natural Light.