It requires one lightwave dimmer and up to 6 lightwave 2 way dimmers. Now as per the lightwave wiring diagrams for 2 way switching.

Lightwave Smart Lighting Review Tech Advisor
Lightwave rf 2 way switch wiring. Now when i turn on both dimmers ill bridge the downstairs and upstairs circuits overloading the lights. Two way switching means you can switch the same light fixture from two switches that are located in different sides of a room. Simple installation standard wiring configurations make the smart light dimmer switch easy to diy install or via a suitably qualified electrician. In a standard 2 way switching arrangement you may find that there is an l1 and l2 cable used. Simple to install and requires no extra wiring. Here is an image of a lightwave rf dimmer switch shown from behind.
Our smart series dimmer light switch offers soft start illumination 2 way switching as default and multi way wireless communication with other lightwave dimmers. Each requires power and a direct connection between the s terminals on each device do not insert the live into the s terminal. Now lightwaves wire free switch and smart lighting allows you to add any number of light. Lightwave rf protocol ensures reliable wireless. Home automations set schedules for lights to come on at certain times to simulate occupancy. Switched live out x should be connected between the two switches.
Pairs with the lightwave link plus via the lightwave app. Wiring a two way switch. Automations provide a host of features including timers group actions triggers and wireless 2 way switching. Lightwave provides a variety of smart hubs dimmers and sockets that allow you to manage your lights heating energy consumption and home security all in one place. You can also control lights with home automation. Our range of lightwave gen 2 smart devices replaces lightwave rf range and are designed to help the user to gain better control of your home with your smartphone or tablet.
Now lightwaves wire free switch and smart lighting allows you to add any number of light switches wherever you want without having to cable. 2 way switch wiring used to be a convenient solution for turning your homes lights on or off. 2 way switch wiring used to be a convenient solution for turning your homes lights on or off. Two way switches have a com terminal as well as l1 and l2 terminals.