1. First of all, the light rotary switch has many uses, and its rotating area is limited to some extent, mainly because the resistance value plays a role in changing the contact switch.

2. Secondly, the optical rotation structure is composed of insulating substrate, jumper positioning mechanism, rotating shaft, switch rotor, stator and other fixed parts.

3. Finally, the rotary switch is a switch that controls the on-off of the main contact by rotating the handle, which is mainly used in radios, tape recorders, televisions and various instruments.