It’s a Rest API
This is my item :
Switch TabKitchen {exec=">[ON:curl http://192.168.111.7:2323/?cmd=screenOn&password=admin] >[OFF:curl http://192.168.111.7:2323/?cmd=screenOff&password=admin]"}
I guest you could use HTTP binding I was more confortable with exec !
Here all the documentation there is a lot of thing you can do
http://www.ozerov.de/fully-kiosk-browser/#rest
No one answer me yet on this question I’m gonna try to ask it to you :
Do you use this : Custom widget: Current Weather
in my case the icon appear black and doesn’t move with fully and I was wondering if I can fix it
EDIT Oh… i was not fast enough 
you can still use my item if you want