The outer chamber is made of mild steel, powder coated to protect from rust. Inner chamber is made of stainless steel. The outer & inner chamber is insulated by good quality glass wool to protect heat loss. Temperature range 50°c to 250°c. Accuracy ± 2°c approx. Heat distribution system inside the chamber to maintain temperature uniformity. Light bulb indicating heater operation at the front. Heating elements are connected in three sides of the chamber. Operating voltage 220V AC, 50 Hz.