The types of x ray hand switch are 1-step, 2-step and 3-step.
One x ray switch press the direct exposure film, the second x ray switch has one more pre-set button than the first x ray switch. Press the next button to prepare, and the second x ray switch to expose. The existence of the pre-set can prevent the wrong trigger.
For dental X-ray machines, 1-step x ray switch is usually used. First of all, whether dental X-ray machine, oral panoramic X-ray machine or dental film machine, oral area is small, X-ray demand dose is low, X-ray radiation is small, the possibility of error triggering is small, so dental department generally uses 1-step x ray switch, simple and convenient operation, and can save investment.