Overheat protection automatically shuts off heating and provides audible and visual alarms in case of overheating. Electric interlock safety prevents the start of a cycle if the door is not properly locked or prohibits door opening when the chamber is pressurized or power is disconnected. Door-temperature interlock safety prevents explosion of liquids by cooling them down to a safe temperature limit (20℃ lower than the local boiling point) before opening the door. Anti-burning protection automatically cuts off heating with audible and visual alarms when the autoclave is lacking water. Steam pressure safety valve automatically activates when the chamber pressure exceeds the limit.