The dual system's microprocessor control with 2 separate interior doors that can be opened independently to minimize frost accumulation in the room. The unique door seal design minimizes the temperature loss when the door is opened. The stainless steel handle ensures that the door opens, even in the case of frost. 7-inch touch screen, all data is displayed.The screen is easy to observe and writes a short record of the board. This will be passed to the next user green handle, making it easy to use 2 locks.