PAN04 Z-Wave S1/S2 - bell switch or chandelier switch for wall control?

Hi. I have started planning a remote lighting control installation using z-Wave technology. As a test, I have bought myself

Z-Wave 2x1.5 kW switch module with energy pump PAN04

http://www.z-wave.pl/pl/p/Modul-przelacznika-Z-Wave-2x1%2C5-kW-z-pom.-energii-PAN04/100

And to control it
Z-Wave adapter Z-Stick S2 DSA02203-ZWEU
http://www.z-wave.pl/pl/p/Adapter-Z-Wave-Z-Stick-S2-DSA02203-ZWEU/18

I connected everything "on a spider" on the table, connected the adapter to the raspberry pi and controlled this with the software http://www.homegenie.it/.

The Z-Wave PAN04 switch module has a place to connect the S1 and S2 wall buttons.




What kind of buttons should I connect here ?


Does it involve:
1.A double bell switch. (also called momentary)
2.Chandelier switch.

i took the names of the switches from the website
http://www.elektroinstalacje.info/articles.php?article_id=33


I know that on the site where I bought the devices there are buttons on sale
http://www.z-wave.pl/pl/c/Przelaczniki-scienne/5
But their prices are about 150 pln. And I don't know if there is a need for such an expensive solution. If they are necessary then please let me know which one will work with my equipment.

The question may be very amateurish but I'm afraid to burn something trying at random.

You need a bell switch.
Z-wave switches are nothing more than a switch with an integrated z-wave module.

Thank you and I am closing the topic.