Micro-processor control - regulates both heating and stirring functions. Samples are heated to temperature quickly and accurately. Speed is precisely controlled, and provides consistent stirring throughout the entire range. Ramping feature slowly increases speed to avoid splashing, improves magnetic coupling and provides excellent low speed control. Aluminum top plate materials - aluminum tops feature a chemical resistant, reflective white top plate surface that's easy to clean. LED display - Shows set point temperature. Display is easy-to-read and provides repeatable and accurate results every time. Hot top indicator - For additional safety, hot symbol warning light is illuminated when unit is heated above 40 degree C. Remains on until unit cools below 40 degree C, even when heater is turned off. Stir protection - If stirrer motor stops or fails, unit will automatically shut down heater (for stirring models). Overshoot protection - If unit exceeds set temperature by 10 degree Celsius unit will automatically shut down. Recall last temp - Built-in memory allows users to recall last set temperature even when unit has been turned off. Temperature range ambient +5 degree to 400 degree Celsius, overshoot protection, temperature recall, hot top indicator, 120v 50/60 Hz.