Never used one of these personally, but have used many others in the past.
"They all do the same thing!" That's what one of my professors kept telling me after he'd showed me how to set one up and then gave me a totally different brand for the lab test some 30 years ago. It's funny - I was so frustrated with him over that, but I end up telling my students the same thing about many different "black boxes" you have to set up/configure.
OUTPUTS will differ for on/off (digital or discrete) control and analog control. You may or may not have both options or be able to configure the output. For the ones I use (dated), I have to swap a board the size of a postage stamp and make a configuration change.
INPUTS typically allow options based on the terminals provided/which you choose, PLUS configuration changes. For example, an RTD uses three terminals, but a TC uses two. TCs come in various types, so a configuration setting will be required to choose RTD or TC (or even an analog signal (0-10V or 4020mA) from an analog output, from a temperature transducer.
It has been common, since the inception of these "single-point controllers" that several brands all use the exact same controller, but change the appearance of the faceplate and, possibly make changes to how you navigate the menu. Price, how easy it is to navigate the menu and the faceplate are often the only differences between three or four "brands of these things, YET, "they all do the same thing."
They all need power, they all have an input (for the sensor) and an output (what switches/controls power to your SSR, SCR, MDR, etc., which switches power to the load - the heating element), both of which can vary or be configured and they all control the same way - Proportional, Integral and Derivative logic embedded in the chip. MAINLY, the difference comes down to how difficult or easily the menu is navigated, and sometimes what they call stuff. Documentation can vary wildly in quality, and those translated to English by non-english-speaking countries can be confusing - because sometimes they use "proper English" and we're used to our on colloquialisms.