This is a newer device with quite an unusual configuration.
First, it has a set of physical controls on the device itself, including jumper pins. While most of the multifunction siren devices out there can shift from chime to Siren through a network command, this one appears to require that you physically set the jumper pins inside the device, so you have to pick chime or siren, but you won’t be able to shift between them without physically changing the pin settings. The same is true of the siren volume for high/low.
Next, although it supports multi channel Association, it doesn’t appear to do anything with it, as it only has the basic lifeline Association group. I know that’s really technical, and it’s not really something most people will have to worry about, but it’s just a little weird.
The good news is that if you set the jumper pins to the settings that you want, you should be able to just define it as a switch and turn it on and off from SmartThings without getting into anything complicated. I know that may not be all that you want it to do, but that at least should be pretty simple.
It’s not clear to me how the long tone (entry) Setting is achieved. The user manual isn’t really very clear on that. That might require a custom device type handler.
@krlaframboise has worked with a number of different Z wave sirens and might have more to add.
Meanwhile, I have to say that I personally would prefer a siren which can be configured on the fly through network commands. There are at least four or five different models of this type. But if there’s a particular feature on the eco-link that you really like, let us know, and hopefully someone will know how to get it set up for you.