Flat, bright white pyroceram brand glass ceramic top material provides uniform heating, is easy to clean, and resists scratches, corrosion, and chemicals. The housing features a spill Trough to deflect spills away from the display and control knobs. Electronics are sealed and enclosed to protect against harsh chemicals. An external support rod holder let you mount a thermometer, electrode, or burette. Units automatically adjust to large increases in speed to minimize stir bar decoupling. Stirring hot plates feature a LED light to warn you If temperature exceeds 140°f (60°c). temperature display is adjustable in 5° increments and indicates when set temperature is reached. Separate temperature sensor will cut-off power If the unit overheats. Unit can feature international symbols for easy recognition by all operators microprocessor-controlled feedback maintains constant speed and temperature . Digital display provides easy-to-read, led-indicated temperature and speed settings . Small footprint and low profile conserves lab space and easily fits inside a hood or cabinet.