Inputs on KC868-A16. What is correct?

[fproof88]

24vdc---------switch---------Input 1
GND ‐-‐---------------------------GND                       

What do you mean by switch output 24vdc?

Which one is true for 24vdc input?

################################################################  Input1 ###
  - platform: gpio
    name: "HotTub_I1"
    pin:
      pcf8574: pcf8574_hub_in_1
      # Use pin number 0
      number: 0
      # One of INPUT or OUTPUT
      mode: INPUT
      inverted: true
################################################################# Input2 ###
  - platform: gpio
    name: "HotTub_I2"
    pin:
      pcf8574: pcf8574_hub_in_1
      # Use pin number 0
      number: 1
      # One of INPUT or OUTPUT
      mode: INPUT
      inverted: false