[![enter image description here](https://i.stack.imgur.com/YByHs.png)

Just bought my first home and this is my first time posting, so please forgive me if my terminology is incorrect.

I currently have bedrooms upstairs each with 1 baseboard heater and thermostat for each. The circuit breaker is off and I've undone most of the wiring to it.

The thermostat is an analog, single pole line voltage.

I'd like to upgrade to a [digital double pole](http://rads.stackoverflow.com/amzn/click/B000GGPMZ6).

It looks like there is 3 wires (really groups of wires, I don't know the term for this), possibly 10-3 or 12-3 coming into the junction box. I didn't specifically look that the gauge. It might actually be 10-2 or 12-2.

Do I simply need to connect 2 hots and 2 neutrals to the thermostat and I am set?