The Thermo Scientific Cimarec+ series digital stirrers, hotplates, and stirring hotplates are designed to provide precise stirring control, exceptional safety, and temperature performance for routine protocols All units offer digital displays of rpm and temperature, with the sole exception of the 10.7x10.7cm (4¼x4¼") hotplate stirrer model. This model only displays temperature due to its overall small size. Patented StirTrac technology provides innovative engineering for slow-speed stirring, consistent speed control, and strong magnetic coupling. Temperature is adjustable in 1° increments. The HOT TOP warning system is a standard feature, and is designed to protect users from accidental burns. The HOT TOP feature provides a prominent display when heating surface is above 50°C (122°F), even when unit is shut off (as long as the unit remains plugged in). The Cimarec+ series also features automatic over-temperature protection, and a raised display designed to protect electronics from spills. Units include one stir bar. Optional temperature probes and splash guard protection shields are available separately.