Hi, I have a local security company come in and install the NX148E Security system 3 days ago. It came with the NX-148E-RF Keypad. They told me that if i wanted to be able to control the system from my iPhone, Such as disarming it or arming it, I would have to buy a part for it. I was wondering if someone could tell me what this part is and maybe where i could get it. He quoted me a price of 300 but i would rather buy it my self if i can. Does ANY one know where i can find one. Im using a UL Monitoring Station from them as well. Thanks!!