Product Summary Natural convection hot air sterilizer with program function, easy to set Features of Dry Sterilizer (Laboratory use) (SI402) Features Quick, safe and reliable sterilization function. Features Easy operation, available for fixed temp., program, quick auto stop, auto stop and program auto start functions. Features Use special function menu keys and up/down keys to realize digital setting. with repeat function, 6 patterns program operation. Features Use submenu keys to operate calibration offset, power failure compensation and key locking. Safety Self-diagnosis circuit (abnormal temp. sensing, heater disconnection, auto overheat prevention, SSR short circuit), overheat protector, ELB to prevent overcurrent, key lock, etc.