Waterbridge Electric Plate Warmer - Heats up to 15 Plates - Sweet Pastimes Crimson A thermostatically controlled electric heating pad warms plates to a hot and comfortable temperature of 150 degrees Fahrenheit. Warms up to 15 plates. Click "Waterbridge" to see more patterns and sizes! The insulated base pad protects all tabletop surfaces. Includes a clear zipper bag for easy storage. Includes a 10 year limited warranty.