2 In 1 function: This electric suction vacuum driving dust collector can be used not only as a dust collector but also as a laser level. Laser Grade feature: Comes with laser and two horizontal foam. This function can be used for advertising, furniture installation, decoration engineering, production line positioning and so on. Pneumatic support: pneumatic wall support bearing up to 5kg, suitable for configuration of laser level instruments and other equipment. (excluding laser grade instruments) Detachable design: The dust collector can be used separately from the function of the dust collector and the support. You can remove or install the precipitator or bracket by pressing the button. Healthier experience: With this tool, the excavation structure of the wall can be simplified, and dust will not fly or inhale during the excavation process, which can achieve a better experience. Specifications: Material :ABS Support weight :5kg Battery :1 * lithium battery, 1800mah(included) Laser power :1mw Protection level :IP54 Anti-fall height :1.2 Charging voltage :3.7V Working current :0.5A Inspiratory flow :2lpm Operating noise :60db Service pressure: -55kpa Operating temperature :-20 70 Commercial size :1907752mm/7.53.02.0 inches. Packing list: 1 * Dust collector