Ezlo Atom relies on the latest generation of Z-Wave technology (i.e. Z-Wave Plus), which goes a long way toward making Ezlo Atom compatible with the other Z-Wave certified devices. In theory, if it's a certified product that you're trying to pair with Ezlo Atom, it should work out of the box. There are some qualifications to be kept in mind, however, as there are certain devices that won't work with Atom now (e.g. cameras) and we can't offer any guarantees as to the functionality of devices not featuring on the list referred to below.
Devices entailing the exchange of security keys, such as door locks, to give another example, might not work as they should or even be able to be paired correctly if they're not to be found on the list—which is always the safe way to go when choosing a device to add to your smart home system.
We have our own list of devices that have been officially tested and integrated for a smooth pairing process. We might provide dedicated device pairing wizards for these, on our interface, and the certainty that they've been officially screened by us. You can find the list here. Just make sure Ezlo Atom is selected from the Controller list, and then, if you want to have the compatible devices sorted by category, pick a device type from the Category list.