Cycling on and off frequently can shorten the life of fluorescent bulbs such as T8s, including those used in high-bay fixtures. The rapid heating and cooling of the electrodes during each cycle can cause premature degradation of the coating, leading to reduced light output and a shorter lifespan.Occupancy sensors detect motion or presence in a space and automatically turn lights on or off accordingly. While these sensors can save energy by reducing unnecessary lighting, they can also increase the frequency of on/off cycles for the bulbs. This is especially true in areas with frequent movement or activity, such as hallways, restrooms, or offices with a lot of foot traffic.The extent to which cycling affects bulb life depends on several factors, including: Bulb Type

Different types of fluorescent bulbs have varying sensitivities to frequent cycling. T8 bulbs are generally more susceptible to shortening than T5 or LED bulbs.

Ballast Type

Electronic ballasts, which are commonly used with T8 bulbs, tend to have faster ignition times than magnetic ballasts, resulting in more frequent cycling.

Frequency of Cycling

The more often the bulbs are cycled on and off, the greater the potential impact on their lifespan.To minimize the impact of occupancy sensors on the life of T8 bulbs, it is recommended to:

Use T5 or LED bulbs

These bulbs are less sensitive to frequent cycling compared to T8 bulbs.

Consider using a motion sensor with a longer delay

This will reduce the frequency of unnecessary on/off cycles.

Avoid using occupancy sensors in areas with frequent movement or activity: Instead, consider using manual switches or timers to control lighting in these areas.By following these recommendations, you can help extend the lifespan of your T8 bulbs while still benefiting from the energy savings offered by occupancy sensors. Flag for review