How to wire up Rasp binary sensor

Configuration
1

I want to set up a the Raspberry pi binary Sensor with a hardware switch but i don’t know how to wire it up correctly and configure it.

This is my wireing but I don’t if it is correct.
And this is my Config:

binary_sensor:
  - platform: rpi_gpio
    ports:
      12: Space
    pull_mode: DOWN

I have all GPIO pins free