Necessity of Selection of Secondary X-ray exposure hand switch

In fact, the second X-ray exposure hand switch is more practical than the first X-ray exposure hand switch.
The second X-ray exposure hand switch has more reserve gear than the first hand brake switch. Generally, the first gear is the reserve gear. Pressing the second gear is the exposure completion. What is the necessity of reserve file? People inevitably make mistakes in doing things, especially in the characteristics of X-ray, which radiates a lot to the human body. The purpose of the preparatory file is to prevent the wrong trigger from harming the human body. At present, besides the dental X-ray machine using one-stop X-ray exposure hand switch, two-stop X-ray exposure hand switch has been widely used. The two-stop X-ray exposure hand switch is more advanced and more suitable for people’s needs. Safety. At present, there are many types of two-stage X-ray exposure hand switch.