I have a small Vizia RF network and am going to expand it, but am trying to determine what type of device to use for the second switch in a 3-way switch. For example, if I use an RF+ Switch (such as VRS15-1L) on one of the switches in a circuit, do I need an RF+ for the other (VRCS1-1L) or can I just use a non-RF (VP0SR-10) for my automation to work properly? I am having trouble finding documentation. Since they are on the same electrical circuit, won't the RF+ detect when the state is changed by the non-RF switch and report that to the Z-Wave controller? I must be missing something here, but also trying to save $$.