Radiant, infrared directional heat. Stainless steel and anodized 6061 aircraft aluminum. Ideal for patio, deck or other outdoor spaces. Advanced medium wave infrared technology warms people and objects within a 64 square feet area – without heating the air. Operates with a single on/off switch. An integrated tip-over switch turns the unit off if it should accidentally fall or be knocked over, and the tip guard on the lamp adds an extra measure of safety. Operation is silent and odorless with no combustion or chemicals involved. Use in all seasons – IP65 certified for use in wet environments.