Newest Handheld Portable Wireless digital X-ray Unit 1.Can be used with sensor 2.High contrast of ... .8. After positioning,use the ON/OFF on the main Unit, to take pictures. (Notice: gently press 0.5 sec to ... tooth following the right operating procedure of the X-ray Unit,then take the film out from the mouth.2. Use ... the normal use Newest Handheld Portable Wireless digital X-ray Unit