Any Z-wave device will or should pair with the ClareHome system, this is general Z-Wave compliance. However, this does not mean that ClareHome will interact with any or all Z-wave devices. Clare builds and tests integrations for all "supported" Z-Wave devices, and while a non-supported device might pair, it will pair as "unknown" and will likely not work with ClareHome. This is particularly true with complex devices such as door locks and thermostats. Some simple devices, such as lighting dimmers and switches, may work but will require a custom service be created using advanced Fusion programming techniques.