Features: 1. This dust collector is mainly used in industry enviroment. It can collect all the dusts in the air easily to protect pollution to the air. 2. The dusct collector is located in an rectangular box. Good and simple design. It is easy to maintenance the motor. It can be placed under the dental laboratory bench or other places, so that it will be very convenient to collect the dust. 3. The collector motor comes with strong power, high efficiency, low noise and cost down specifications. Specifications: Voltage: (A) 220V/50Hz ± 10%, (B) 110V/60Hz ± 10% Power: 370W Maximum pressure: 17kpa Airflow amount: 70m/h Maximum vacuum: -9.8kpa Maximum noise intensity: -60db Dimensions: 35 x 20 x 35cm Content: 1X Digital Dust Collector other accessory How to use? 1. Open the box door, check the filter bag is on correct lacation 2. Connect the soft plastic tube with wind mouth 3. Power on, adjust the frequency to reasonable one to let it work Notes: 1. This product should work with good power supply cable 2. Pay attention to the power supply cable not to be near sharp items 3. When you are duty off, please remember to separate the cable with power supply 4. Clean the dust-collector bag everyday 5. Please remember to clean the filter bag every 3-6 months 6. Change the carbon-brush every 400hours and change the air filter. 7. Before you use the dust collector, please remember to take off 4 pieces optional multi-direction castor and dust exhaust, these itemsare inside the front door of dust collector.