kc868-ak and button switch

[skench]

Good afternoon. 
Please tell me if I can connect a stupid button switch to the kc868-ak? For example https://ae04.alicdn.comhttps://ae04.alicdn.com/kf/Sb26afe9d58fd49eaad6fdbc03e88c884n.jpg ? 

In the diagram we see "Lb1" and "Lb". On the kc868-ak board there are 36 numbered and 4 kcom. Please tell me how to connect correctly?

[admin]

it can use. just connect with digital input port and COM, 4 KCOM actually is same, on PCB all are together.

[skench]

Should I connect to the digital port Lb1 or Lb?
Which one of the four kcoms should I connect to?

[skench]

it can use. just connect with digital input port and COM, 4 KCOM actually is same, on PCB all are together.

Should I connect to the digital port Lb1 or Lb?
Which one of the four kcoms should I connect to?

[admin]

any port can be connected, but use by smart system, suggest you chose "momentary" switch panel, just a push-button type is better.