YL ROUND DIFFUSEROPERATION MANUALThank you for choosing YL Round Diffuser as your aromatic companion! With this diffuser, essential oils are broken down into microparticles by using air vibration without using heat so that the oil's chemical compositions are not altered, allowing you to truly enjoythe beautiful smell of delicate aromatic signatures of Young Living's essential oils over a relatively large space. It offers 4 intermittentdiffusing durations: 30 minutes, 60 minutes, 90 minutes and 120 minutes. It is designed to turn off automatically at the end of the pre-set duration, which helps you meet your desired usage needs. The unit features LED lamp that offers soft, ambient lighting to createa relaxing atmosphere.Please read the following instructions before use:<How to assemble the unit>1. Connect Round Glass Nebulizer (B) by slowly pressing it down into the rubber grommet which is located at the center of the body(E). Do not twist Round Glass Nebulizer in circular motion.2. Place Glass Top (A) on top of Round Glass Nebulizer (B).3. Connect AC Adapter (F) to the body.<How to use>1. Place the assembled Diffuser on a flat and stable surface. (example: on top of a counter, dresser, desk, etc.)2. Use the diffuser under the temperature in the range from 10℃ to 30℃.