4,000BTU-7, 000BTU Portable Infrared Propane Heater Electric Ignition Flameout Protection Gas 4,000BTU-7, 000BTU, selective Temperature Foldable handle to save space Auto shut-off if tipped over, if pilot light goes out, or if detects low oxygen levels Connects to 2 types of disposable 1 lb propane bottle and propane tank, more choices. Automatic lighting