autoclave 12 liters class b with usb blackBlack 12 liter Class B Autoclave with USB Warranty details Safety The cycle does not start if the door is not properly closed. The automated double hydraulic interlocking safety device prevents the door from opening while the chamber is under pressure. Safety valves prevent pressure in the generator and camera. A safety thermostat prevents overheating in the chamber and generator. An automatic safety lock prevents accidental opening of the door during