This product have the automatic re-boil and boil-dry protection function, the highest temperature is 100 â . When the water reach the highest degree, it will keep warm automatically. When the temperature go down to 85 â it will re-boil again. And the machine can be power off when the there are not water in the machine. Ideal for either continuous use during the busiest periods or occasional use at the quieter times , water boilers provide a constant flow of boiling water for tea ,instant coffee ,hot chocolate and soup. Stylish, durable and easy to use , manual water boilers are designed to perform and built to last. Ideal for clubs, community, leisure centres , restaurants, office and snack bar.