Binchotan charcoal carpet with energy-saving room temperature sensor, adjustable temperature, full surface and half surface settings available. Heater unit only *cover not included! - Product Name: Binchotan Charcoal Carpet - Sensor: Energy-saving room temperature sensor - Manufacturer: Matsushita Electric Works - Model Number: DRS304-C - Size: 3 tatami mats Purchased in October 2003, but has been stored unused for the last 6 or 7 years. Operation confirmed, surface switching also switched correctly. Will be shipped as is, in the original box (image 1). Thank you for your consideration.