Portable X-ray machine Features:1.Power: 24V 8000MA Charger: 220V/110V, ... list are packaged within the box. 3. Install the blue ray tube to the foreside of the ball head,then tighten ... standby status. (At this point there was no output ray,so the dental films can be used again).10. Repeat ... the tooth following the right operating procedure of the X-ray Unit,then take the film out from the mouth. ...