Electrolux 4071 is a microwave oven designed for domestic household use. It features a glass tray that must be positioned in the oven during use. Cooking vessels can get very hot, so care should be taken not to let them come into contact with any plastic surfaces. Generally speaking, metal should not be used in the oven when cooking because it reflects microwave energy and may cause arcing. Do not use capped bottles, jars, or tins. Only use cooking containers recommended for use in a microwave oven.