Designed for ceiling heights of 9-10 feet or wall mounted above 11 feet. Provides air and surface cleaning area up to 800 square feet. Includes motion detection sensor (PIR) with 30 minute delayed shut-off after the last occupant has left the room. Our replaceable lamp with expected life of up to 9,000 hours also includes active lamp life detection with status indicator, lamp hour reset and lamp health detection. California Air Resources Board (CARB) certified. Executive Order Number G-23-310 Designed to meet and not exceed ACGIH UV exposure Threshold Limit Values (TLV) for human exposure. Environmentally friendly/Mercury free. EPA No. 96253-MO-1. Made in USA. The Krypton-11 R is ideal for ceiling heights of 9-10 feet or wall mounted above 11 feet, and can be mounted on either the ceiling or wall with supplied hardware. Our Krypton-11 R features include a replaceable lamp, active lamp health detection, lamp hour reset, lamp status indicator, manual on/off switch and PIR sensor. The PIR sensor detects occupants in the room and will remain on for 30 minutes after the last occupant has left. 20’ cord included for easy DIY installation. Environmentally friendly/Mercury free. EPA No. 96253-MO-1. California Air Resources Board (CARB) certified. Made in USA. *Please note installation heights may be lower than stated if installed by a certified installer.