Sensitive and precise injection of new sensor chip, infrared sensor system has excellent anti-interference performance, fast bubble elimination, and from false induction. High-quality motor, low power, quieter, -quality motor system, long-term stable and trouble-free operation. IPX waterproof, safe to use in humid environment, the machine can work without worrying about splashing water. 300ML large capacity can be used by the whole family for about 1 month. The large bottle can be used by the whole family for one month to avoid frequent water filling.