The ultrasonic cleaner is a microprocessor controlled device which uses ultrasonic or high frequency sound waves to clean jewellery and other sensitive items.they are made of su304 stainless steel and are supplied withCover and basket, as well as for a number of important functions.Functionality:1.The ultrasonic cleaner is a microprocessor controlled device that uses ultrasonic or high frequency sound waves to clean jewelry and other delicate items.2.Large digital timer and temperature display for precise wash time and temperature control. (The heating function of the machine is only an auxiliary function, it is possible to start cleaning things when the temperature is at 20. It is not necessary to add a higher temperature before cleaning.)3.Digital timer display for precise control of cleaning time. And timer setting: 0 ~ 30min, 18 adjustable cycles.4.Tap water or other ordinary solvent can be used as a cleaning liquid; Do not use flammable, explosive or corrosive detergents please. Each time the machine is turned on, the working time should not be too long, please stop 5 minutes after working for about 15 minutes to better protect the machine and reduce the failure rate. Thank you very much!5.APPLICATION - For cleaning dirt, oil and bacteria that are difficult to remove in metal products. Suitable for cleaning electronic tools, jewelry, glasses, dental equipment, etc. Widely used in services, electronics, pharmaceuticals, machinery, chemicals and many other fields.List of packages:1 * ultrasonic cleaners1 * eu supply cable1 * manualPrecautions1. do not use when the container is empty.skip after use and the net.2. no solvents or corrosive or flammable solutions, as they would damage the apparatus.3. when adding or changing liquid, the feed must be disconnected.4. cleaning jewellery made with glue or adhesive tape can break ultrasonic waves.5. during cleaning, noise is normal.