Pro tip: It’s likely you’ll also need to replace the existing switch box with a larger one to accommodate the extra wires for the 3 way switch. There are two ways in the smart-switch world to have 2-way switches. One is the traditional way where both switches are wired to the light and each other. Another way has a primary and secondary switch only the primary switch is connected to the light and the secondary switch is wirelessly connected to the primary switch. I prefer the traditional way because it still functions even if your WiFi goes down but there are cases where the primary-secondary setup is useful, for example if you don’t have the control wire connecting the two switches. You have two clusters of lights in your bathroom, a set in the ceiling and a set around the mirror. These are controlled from a single panel with two buttons on it. The first button controls the ceiling lights, the second button controls the mirror lights. This is a 2-gang switch.

There are a few scenarios where you may need a 2-way, 2-gang (or even 3-gang) switch. In my house I have hallway lights upstairs and downstairs. I can control both sets of hallway lights from two separate panels, one upstairs and one downstairs. Each panel has 2 buttons on it. This is a 2-way, 2-gang example.

Introduction

A switch is the control mechanism behind the panel. A switch can be 1, 2, or 3-gang. Alternatively, you can have a dimmer switch with on/off, brighter, and darker buttons. We don’t carry, and haven’t found, dimmer switches that are more than 1-way or 1-gang. The switch is also the part that you connect to your wiring. The switches we carry all require at least 3 wires, a L (Line), N (Neutral), and L1 (Load) wire.The Line wire is the wire that comes into the switch from your electrical box. It carries power to the switch. The L1 (L2, L3) wire(s) are the Load wires and carry power from the switch to the light.The Neutral wire completes the circuit and allows the switch itself to be powered. This is also why your lights have a Neutral wire but the wiring to your switch may be missing it. Older mechanical switches didn’t need a Neutral wire because that switch isn’t powered. If you need to bring a Neutral wire to your switch, this requires a bit of elbow grease and fish tape (aka wire snake).Now you know! Pro tip: The switches will be identified by a label on the common terminal and/or the terminal screw will be a different color. Connect the wires to the newly installed 3-way switches with ground screws using one of the two wiring diagrams (Fig. A or B). If you’re replacing older switches, these are often 1-gang each. If you have lots lights controlled from a single panel, this means you have really wide (and ugly) panels. I personally suggest replacing these wider panels with multi-gang single panels and filling in the old gaps in. This is a really easy way to clean up and modernize your living spaces.

A panel is simply put the control surface for your lights. Depending on what kind of switches you have right now, you’ll probably need a single or dual panel. Sometimes more. Single panels are square 86mm x 86mm, dual panels are wider 156mm x 86mm. We have a 30-day return policy, which means you have 30 days after receiving your item to request a return. Here are step by step instructions on how to wire up a three way lighting circuit or to change a existing two way light circuit to a three way system, this is very useful on stairs etc. as you can have a switch at the bottom of the stairs and one at each end of the landing. Ensure the electricity is isolated before working on any electrical circuit! For three way switching you need a special light switch with 4 terminals, this is called a intermediate switch and is easily identifiable. You will also need two light switches that are "two way", these will have three terminals.

A panel can have multiple ‘gangs’ on it, or a single dimmer with on/off, brighter and darker buttons. Let’s start with ways. A ‘way’ is a term for how many switches are controlling the same light. The most simple switch is a standard 1-way on/off switch. Most of the lights in your house will likely be controlled by these 1-way switches. A 1-way switch can have 1, 2, or 3-gangs (we’ll get to gangs in a bit), or have a single dimmer switch. A panel can have up to three buttons on it. They can come in either 1, 2, or 3 gang configurations or with a dimmer switch.