The Desa Tech 409020 space heater is a portable heating solution designed to provide temporary warmth in well-ventilated areas. It operates on kerosene or No. 1 fuel oil and delivers an output of 50,000 BTU per hour, making it suitable for heating larger spaces. The heater features a Deluxe control system with a light-sensitive cell, relay, and circuit breaker for added safety, ensuring it shuts off in case of ignition failure or fuel depletion.