Labconco Heated Shelf W/SENSOR 230V. A sensor in the lid of the centrifuge picks up the temperature of the lifted sample and controls the heater panel. The sensor is placed in the lower right-hand corner of the lid. This sensor decreases the amount of energy required to operate the heater panel. Place the lid on the rotor where desired for drying or cool the tube and place the lid on the rotor where there is less contamination of the sample. The heated shelf provides a circulation current to all the vessels on the rotor. A display window shows the current being applied to the heated shelf and the type of heat source. Place the lid on the rotor and then lower the tray down until the level is read. Place the lid on the sensor where desired. Place the sensor where the bottom of the rotor will be. Specifications for Labconco Heated Shelf W/SENSOR 230V 7760801 : Description: HEATED SHELF W/SENSOR 230V (Please note that the description and stock photo may not correspond to the specific model listed above) We offer only genuine Labconco products authorized for sale in the U.S. and other markets so you can be sure that you are buying authentic Centrifuges with a full manufacturer's warranty in addition to our own 100percent Satisfaction Guarantee. We are your premier online distributor for Labconco Centrifuges. We are an authorized supplier to all federal and state government agencies as well as to research and educational institutions and can facilitate volume orders on many types of laboratory equipment lab consumables and other products to help fulfill your specific needs. We offer Free Shipping and FREE USPS shipping to APO and FPO addresses on all orders in our store over 49. Please refer to our APO/FPO Shipping and Export Restrictions for more information on export to APO/FPO addresses. In addition to the Labconco Heated Shelf W/SENSOR 230V 7760801/ 14221-950 we carry a full complement of Centrifuges as well as other product offerings from Labconco. We also carry a full line of Labconco accessories to help meet your laboratory and scientific needs. For a complete selection of Labconco Centrifuges please visit our Labconco page. For more brand name Centrifuges please visit our Centrifuges store section. To see our complete line of lab medical industrial and scientific products please see our science and lab equipment online catalog. Labconco Heated Shelf W/SENSOR 230V 7760801