This item has been tested and it heats up. The temperature knob lights up when it's on. This vintage 1940s NESCO enamel roasting pan (removable insert) / slow cooker. is a versatile addition to any kitchen. With a 7016 model number, it's made in the United States and can handle temperatures up to 500 degrees Fahrenheit. This pan is perfect for slow cooking or frying, with an 800W power source to get the job done. The enamel material ensures durability and easy cleaning. Add this unique collectible cookware piece to your collection today. Has minor wear for it's age. Cord is in very good condition with no signs of wear. Please see photos as part of the description.