How to use the two-speed exposure hand switch

The exposure hand switch of our company is divided into one-position hand-brake switch and two-position and three-position hand-brake switch.
The two-stage exposure hand switch is generally in the exposure preparation state, and the second stage is the exposure state. When the first-stage exposure hand switch is pressed, the high-voltage generator and tube will enter the exposure preparation state, and the second-stage button is pressed After that, the high-voltage generator and the tube work to generate radiation.
The exposure hand switch is divided into smooth surface and frosted surface in terms of material.
If the exposure hand switch is used on X-ray machines, dental X-ray machines, laser beauty machines, and rehabilitation physiotherapy equipment, there will be exposure hand switches wherever there is a high-voltage generator.
Why should the exposure hand switch be set to two gears?
1. False trigger, reduce the damage of X-ray to the human body.
2. It has a reminder function, (exposure preparation)