Cycle time for unwrapped instruments is 22 min from a cold start and 12 min from a hot start. Features low water and door ajar indicator lights. When sterilization cycle is complete, door opens automatically to dissipate steam and dry instruments. 4 stainless steel trays are standard, 110 volt. Chamber size: 9" x 15", 4.1/8 Gal, External Dimensions 18.13/16"x15"x16.7/16, Trays Small 2-12"x5.5/8x7/8" Large 2-12"x7.5/16"x7/8".