These hot plates are ideal for cold rooms & can be used at 0-27°C w/ 80% relative humidity, in a non-condensing environment. Stir Trac technology offers improved slow speed stirring, consistent speed control & stronger magnetic coupling from 50 rpm to 1200 rpm. The integral ring stand holder accepts 1.3cm diameter support rod. A single knob design controls heating/stirring & goes up slowly when rotated slowly & faster when rotated faster. Adjustable 1 °C & 1 rpm increments. The RS232 port enables output of time count, temp set points, top surface/remote probe temp, stirring set point & actual speed to a printer or computer. Supplied w/ 6" type K probe, detachable cord, retention bracket that prevents cord from accidental removal, & a TFE-coated stir bar. Walk-away timer shuts off heating, stirring or both after a preset user-defined interval. Durablle aluminum top for uniform heat distribution.Heating surface: 7.25" x 7.25"RPM: 50 to 1200Amps: 5.6Wattage: 670