Features: These are double walled units. Outer made of M.S, Sheet duly enamel painted Inner made up of heavy gauge stainless steel sheet (SS. 304-grade). Temperature range is from ambient to 130°C. Temperature is controlled by Microprocessor Based PID Digital Temperature Indicator -cum- Controller with an accuracy of + 1° C. Provided with vacuum gauge, see through transparent window of toughened glass and two shelves. To work on 220 / 230 Volts A.C. Supply.  Â