This controller can control both a heating and cooling device. Alternatively, it can control a heating or a cooling device.
In my opinion the original ITC-308 was and is a game changer as far as homebrew temp controllers. In comparison to available controllers available at the time the ITC-308 was released, it offered loads more features, including dual stage control, for a fraction of the price. Game changer! The addition of Wi-Fi control and monitoring to this great controller has made a great temp controller even better. Check out our Hands on Review of the ITC-308. That includes a section on the WiFi version.
I’m aware of two different Amazon listings for the ITC-308. From time to time other listings pop up including combos. This listing appears to be the ITC-308 + WiFi
INKBIRD Temperature Controller WiFi Test – note that multiple variations of this product may be available, as such a different version may appear at this link
Price, promotions and availability can change quickly. Check the product page for current price, description and availability.