The whole machine is fully waterproof stainless steel integrated machine, the machine body is made of stainless steel material, this material has excellent dustproof, waterproof, corrosion resistance, corrosion resistance and other characteristics, not only fully closed dustproof and moisture proof design can effectively resist the erosion of high temperature steam, its solid shell design, so that it can maintain a stable operating state in the face of shock and vibration. Screen capacitive touch can also touch water, to achieve multi-touch and gesture operation.