Simply switch the button on the light before installing. Toggle between light and fan operation using a standard light switch. Use it in garages, workshops, sheds, gyms, or anywhere you need extra air circulation. FAN4000/2CCT/LED bulbs output an impressive 4000 lumens using just 45 watts of electricity – up to 85% less electricity than equivalent 300-watt incandescent bulbs. Get up to 20,000 hours/18.3 years of life out of this long-lasting LED bulb. The estimated annual energy cost is $5.42/year. Create a long-lasting, energy-efficient beautiful glow that brightens and cools your home and commercial space.