The Journey Series Catalytic Heater from Mr. Heater is designed for efficient radiant heat on the move. This heater utilizes a catalytic medium to completely and efficiently burn gas. The Oxygen Depletion Sensor coupled with a tip-over safety shut-off switch provide maximum safety. Keep your whole family warm with the new Journey Series from Mr. Heater! Never use third party accessories or attachments with this heater (including attachments for warming or cooking), doing so will void the product warranty, is extremely dangerous, and may result in personal injury or death to you or others.