The Wayne Dry Heat Sterilizer is a fine precision instrument utilizing all the improved techniques developed in the more than 35 years experience in the designing, engineering and manufacturing of dry heat sterilizers. Both models operate at 320-360F (160-180C) automatically. Simply place unsterile items in trays,(plus small needle tray), and set timer. Plugs into 115V AC current. (Please inquire about other voltages). The Wayne Dry Heat Sterilizer is inexpensive to buy and inexpensive to operate.