PerfectPar series LED grow lights are advanced and high performing, built to last. We use top bin LEDs from Osram, Cree, and Samsung, and Philips/Signify LED drivers for long life. These lights are dimmable, and with our intelligent, programmable calendar-based light controller you can control spectrum and light intensity continuously or, as an option, pulse mode operation. By using this light controller you can turn on and off light fixtures for maintaining a daily lighting schedule and also set light intensity day by day, week by week, or throughout the entire growth cycle.