This particular device is battery operated, but it does not actually control current to any specific fitting, so it doesn’t solve the problem of not having a neutral at the light switch. It can’t an replace existing light switch; it’s basically the same as taking a handheld remote and sticking it on the wall. It’s just a nice shape for that.
In the OP can get this specific device working as a button controller, then you could use it to control smart bulbs, like Hues or Osram Lightify. But if it can only be made to work as a Z wave scene controller like the GE 45631, then it’s not going to help much as far as the two wire issue.
There are many topics in the forums that discuss what to do when you don’t have a neutral wire at a light switch. I don’t really want to hijack this topic, so let’s continue that discussion in the following topic: