Hardware input compatible with tellstick?

[Mrandy]

I want to use tellstick net and my ipad to create my own home automation scene. I plan to use for example nexa output products to dim and switch my ligtning on/off. My question is if there is any compatible input device? I want to use my existing light relay and existing hardware push buttons to activate a lightscene. I also want to activate a function from my security system to trigger "night mode" when arming my security system. Any suggestions on what hardware to use?