dental x-ray unit dental x-ray unit Technical specification : Power (v) AC220 50HzTube ... <80% installation process of portable x-ray 1. Open the box2. Check the accessories: Main Unit, Ball Head, Manual, Guarantee ... Packing list.3. Check the outward appearance of the unit, also check to see whether theres any sound ... from the inner of the unit from the sake.4. Install the Blue Tube ...