Ion is a powerful high efficiency low profile 2in recessed downlight with an easy connect electrical box for simple installation. The universal input driver (120v-240v-277v) is fully concealed inside the electrical box and dimmable to 5% using a TRIAC or ELV dimmer. Ion is available in round or square as new construction or remodel with all options IC-Rated and Airtight. F9CS version in model number features a 5-CCT color temperature selectable switch with options ranging from 2700K-3000K-3500K-4000K-5000K. A frame-in kit is included with the new construction version, but can also be purchased separately (R2DRDN-FRAME). Wet location listing for indoor and outdoor applications or in showers.