Canadian Tire

If you go to Canadian Tire and search 'Digital wireless' it'll pull up the one result i'm looking at. Canadian Tire won't let me directly link to it as they want your postal code.

Anyways, i don't understand how they work, does the box include a second box/device with all the sensors and everything that ya put outside?

Ever use one? Any good? Accurate?

All useful information appreciated.

 

They usually have a temp/humidity sensor as well as a wind sensor to place outside.