Single-pole electric switch white mix 1P 16ax 21000 Master

1-module white switch 10th mix 21000 series master

1 module white switch

with this product I want to explain its functionality.
the electric bipolar switch differs from the classic normal switch for the electrical contacts.
many times the question remains and to understand what to install if a classic switch or a bipolar switch for home or shop lights.
bipolar switch has four contacts 2 for 220v power input and 2 for output.
what function does the bipolar switch and unipolar switch have?
classic electric switch and the most used has only 2 unipolar contacts, widely used for simple incandescent, fluorescent neon or led lights.
electric switches are convenience at hand for turning on lights and controlling any other devices in the electrical sector.
when designing a drawing for the electrical system, it is necessary to find the location of the lights and insert the indicator lights in the control modules to have a soft light at night but also convenient for identifying the ignition ..