Why do some hand switchs need to set multiple gears?

Recently, a customer asked why some hand switchs should be set with multiple gears? Let me tell you in detail:
Several types of exposure hand brakes are manufactured by Newheek.
Our company mainly produces wired exposure hand brakes with the following models: LO1, LO2, LO3, LO4, LO5, LO6. Among them, LO1, LO2, and LO4 are two-stage exposure handbrake switches, LO3 is a three-stage exposure handbrake switch, and LO5 and LO6 are one-stage exposure handbrake switches.
So why should the exposure handbrake be set to two gears?
1. The first gear is for pre-exposure, false triggering, and reducing X-ray damage to the human body.
The second gear is exposure, which has a prompt function
If there are three gears, it is connected to the beam light device or other purposes.
If you are interested in our hand switchs, welcome to contact us, call (whatsapp): +8617616362240!