Ooma scout unit to add second line to original ooma hub (core). Second line is a feature with ooma premier service.

Original ooma required for this to function properly.

I tested with my current ooma hub and it is working. I was able to check messages on unit and plug in a phone and get a dial tone.

Scout unit and ac plug only, no box or paperwork.

I am original owner, purchased 2009.

From ooma about instant second line:

Instant Second Line

Do your kids have the gift of gab? No problem! When you sign up for Ooma Premier, you'll get an Instant Second Line feature, which lets you make or take two simultaneous calls without the cost or hassle of installing a second line. So when your daughter's chatting with her BFF (i.e., best friend forever), simply pick up another phone and you'll get a fresh Ooma dialtone.