1, it is best to use a product with automatic humidity function. At present, the internationally popular ultrasonic humidifiers all have an automatic constant humidity function, and can automatically control the
Humidifier according to the user's wishes, so as to keep the indoor air humidity at a normal level and avoid excessive humidification. China's residential area is generally small. If there is no automatic humidity control function, it will easily cause excessive humidity in the room. At present, there are indeed some products on the domestic market that do not have the automatic constant humidity function. Some manufacturers use timers instead of humidity controllers, and they cannot meet the requirements for use. When purchasing a humidifier, just look carefully at the product manual or ask the salesperson to understand it.
2, listen to the noise. Most ultrasonic humidifiers are used indoors, so machine noise is an important indicator. In general, the noise of electrical products used in the bedroom should not exceed 35 dB, otherwise it will affect sleep and health. When choosing a humidifier, ask the salesperson to put the different brands of machines together to test the electricity. Comparing the size of the sound, Yan touches the body with his hands to see if there is vibration. A good humidifier should only hear a slight and steady wind noise, and the vibration is very small.
3, pay attention to electrical safety. Since the ultrasonic humidifier is working with water, safety is extremely important and the country has special regulations on it. No matter whether it is imported products or domestic products, it should be subject to safety inspection by a special inspection agency of the country before it can be listed. For prudent reasons, when choosing a humidifier, you can check with the salesperson if the product has a national and quality inspection department's test certificate.
4, according to the nameplate to identify products. According to the national standards and the internationally accepted regulations, all household electrical appliances must be affixed (printed) with a nameplate. Clearly identify the product name, performance, conditions of use, and manufacturer and place of production. Products often use unapplied nameplates or vague words to engage in word games to evade legal liability.
