There are over 4407 interoperable
Z-Uno is the first and only easy to use developer board that allows you to create your own Z-Wave device without deep knowledge of Z-Wave protocol or programming. Z-Uno is a mix of Z-Wave home automation radio protocol power and Arduino simplicity. Being inspired by Arduino project Z-Uno inherits all concepts of easy-to-use hardware and software solutions, keeping maximum flexibility.
Z-Uno is a fully DIY product. It is made for those who are limited by existing choice of Z-Wave products and wants to extend their smart homes with more sensors and actuators: connect LEDs, buttons, switches, motors or any low voltage sensor including most of Arduino compatible sensors.
Z-Uno programming is done by writing sketch in simplified C language and loaded into Z-Uno using Arduino IDE. Many examples and comprehensive tutorials will help you to make your own project.
This is one of the two officially certified sketches.
Certified 10 Channels sketch
http://z-uno.z-wave.me/examples/Certified10Channels/