It is the temperature insurance is also called over-temperature fuse, I see in the maintenance, commonly used are 185 degrees, the rules of the installation is close to the rice cooker pot body heating plate, the purpose is to prevent the rice cooker malfunction at high temperatures, high temperatures will be burned, melting aluminum heating plate, baking plastic parts. So when the temperature of the rice cooker exceeds 185 degrees, the over-temperature fuse fuses to cut off the power supply, stop heating, and put an end to overheating of the rice cooker.