Aeotec ZW116 Nano Switch

Hi All,

I wondered if someone could help me please!

I bought a Aeotec ZW116 Nano Switch and want to hook it up to my new light being fitted.
I have a light in the landing that is controlled by 2 separate wall switches. The electrician told me that there are 3 cables coming from the switches (if I understood correctly).

Before I found out there are 3 cables, I rigged up a small setup with 2 switches (as attached photo), and that worked fine, but I have no idea how to deal with the 3 wires and my electrician was also scratching his head.

I found a detailed article here, but its for the Dimmer version which is different.
Vesternet website


The manual documents what the wires are for.