3-Way Diagrams for ZEN73, ZEN74, ZEN76, and ZEN77 Switches

A 3-way installation is a 2-point control set-up where you can control your lights from 2 different switches. The S2 smart switches are perfect for that use and feature a patented solution that makes multi-way wiring fast and easy. Just locate the box with power and neutral and install the device according to the appropriate diagram.

How do you find direct connection to power? The easiest way is to locate a black wire bundle and white wire bundle in the back of your multi-gang box. If you're dealing with single boxes only, you'll need to measure voltage on the black leads coming into each box in a 14-2 romex. Still not sure what you're looking for? Send us a few pics and we'll help!

PLEASE READ before you proceed with the installation:

A 3-way is what we call 2-point control so 2 different switches controlling the same set of lights.
These instructions can only be used with the ZEN73, ZEN74, ZEN76, and ZEN77 models. (If you have ZEN71, ZEN72, or ZEN32 switches, please click here for 3-way wiring diagrams)
You have to install the Zooz switch in the box with direct connection to power line and neutral.
Always use simple on/off 3-way switches when connecting them to Zooz switches. No dimmers or electronic switches with a LED indicator may be wired to Zooz switches or dimmers.
There are many different types of 3-way switches, some will have common terminals on top of the switch, some on the bottom. Always locate the common terminals first and adjust the orientation of the wires accordingly. Don't follow the diagrams blindly.
The colors of your wires may not match the ones in our diagrams so please make sure you've identified all wires correctly based on their source, not color only.
IMPORTANT: Once you connect your switches, please secure them in the box, making sure any bare wires and screws are isolated with electrical tape. After the switches are settled back in the box and the wall plate is re-installed, you can turn the power on and test the switches for on/off operation.
The diagrams show all connections but ground (it was excluded to simplify the illustration). Make sure all ground wires are connected to all switches respectively.

Once you're 100% sure you've identified the wires, please make sure power is off and wire the Zooz switch according to the instructions below.

These diagrams illustrate the most common 3-way set-up. However, there are many ways to wire 3-way installations. If you're not able to match yours with the below "before" drawing, please do NOT pick the closest option. Trial and error approach is dangerous with high-voltage installations. Instead, reach out to us first for custom wiring instructions.