Is it possible to add essential oils? No, because adding essential oils may cause the humidifier to block. Can the spray mode be used alone with the night light mode? Yes, you can use them individually. Buy SmartDevil Snow Humidifier 500ml - Ivory | Quiet Portable Air Humidifier from – Express International Delivery Official SmartDevil... 【Two Spray Modes】This humidifier contains two spray modes: continuous spray & intermittent spray. SmartDevil Small Humidifiers Premium Vector | Juneteenth is my independence day t shirt design Do I need to use tap water? Yes, We recommend using tap water to avoid water pooling on top. It is a good companion for air-conditioned rooms. Travel Humidifier Smartdevil Small Humidifiers, 500Ml Desk ... - Australia Travel Humidifier For Hotel Room Can this be used wirelessly? No, the humidifier runs on USB-C power. 【Customer Service】 Provide free online customer service. If you have any questions, please feel free to contact us, we are willing to answer your questions. Click the spray button a second time, switch to the intermittent spray mode (spray 3 seconds to stop for 2 seconds), click the spray button for the third time, turn off the spray. 【Silent Operation & Night Light Function】 Silence operation below 30dB allows you to sleep easily in a comfortable and quiet environment. After using for a period of time, there is light but no fog, how to deal with it? 1.Clean the impurities of the nozzle. 2. Soaked cotton swab thoroughly. 3.Check whether the spring at the bottom of the cotton swab tube exists. 1 Quiet Operation 2 Automatic Shut-Off 3 Night Light Function Click the spray button for the first time to activate continuous spray mode. 【Note:Humidifier is recommended to use clean tap water or mineral water. The duration of the spray can last up to 12 hours and the intermittent spray can last up to 18 hours.