Setting up a Wemo 3-Way Light Switch using your iOS device

Before you begin setting up the Wemo® WiFi Smart 3-Way Light Switch, WLS0403 with the Wemo App, make sure you have the following:

The default Wemo Wi-Fi name. The Wemo 3-Way Light Switch's Wi-Fi name is Wemo.LS3W.xxx (where xxx are the last three characters of the serial number). If you are setting up multiple Light Switches, identify each Wemo 3-Way Light Switch through its Wemo ID or Wemo name at the bottom of the switch.
The Apple® HomeKit™ code. It is located either in the Quick Start guide, at the back of the Light Switch or at the front of the Light Switch (remove the faceplate in order to see the sticker).
An installed Wemo 3-Way Light Switch. For hardware installation tips, click here.
An iOS device
The latest Wemo App available on the App Store®

NOTES:

The Wemo 3-Way Light Switch is not designed to work with metal faceplate as this can interfere with Wi-Fi signal.
The Wemo 3-Way Light Switch cannot replace a 4-way switch.
If you are setting up two Wemo 3-Way Light Switches on the same circuit to manage the same light, click here.

Once the requirements above are complete, proceed with the setup instructions below.

Step 1:  Make sure the Wemo 3-Way Light Switch's light indicator is blinking blue (setup mode).

Step 2:  Launch the Wemo App.

Step 3:  Tap on Add a Wemo.

NOTE: You can also tap the More icon and tap on Add a Wemo from there.

Step 4: Select Wemo Light Switch.

Step 5: Select the Wemo 3-Way Light Switch.

NOTE: You can click on the I’m not sure link at the bottom to provide more information on how to determine the model number.

Step 6: Make sure your mobile device is connected to your home Wi-Fi and have your Apple HomeKit code ready, then tap Continue With Setup.

Step 7: Tap on Yes, It's Installed.

Step 8: Check the light on your Wemo 3-Way Light Switch then tap on It's Blinking Blue.

NOTE: If the indicator light is not blinking blue, reset the Wemo 3-Way Light Switch. To know how to reset, click here.

Step 9: Once your Wemo 3-Way Light Switch is detected, tap on Set Up.

NOTES:

If more than one Wemo 3-Way Light Switch is detected, select one to set up at a time.
If your Wemo 3-Way Light Switch is not detected, you may need to reset your device. For instructions, click here.

Step 10: On the Beginning Setup… screen, have your Apple HomeKit code ready. You can either scan it from the Quick Start guide or enter it manually.

NOTE: If you have multiple Apple Home locations, you may get prompted to select a location. Make sure you select the current location you are in.

Step 11: When prompted, you can either scan the Apple HomeKit code located in the Quick Start guide or enter the Apple HomeKit code manually by selecting Don't Have a Code or Can't Scan? then select Enter code.

NOTE: Your Apple HomeKit code is located either in the Quick Start guide or remove the faceplate to expose the Apple HomeKit code sticker to enter the code manually.

Wait until the accessory has been added.

NOTE: If you receive any Apple HomeKit code error such as Couldn’t add Accessory, tap on Dismiss or Cancel and follow the instructions based on the status of the Light Switch’s light indicator.

It's Blinking – Your Wemo didn't join your home Wi-Fi.
It's Solid or It's Off – Your Wemo joined your home Wi-Fi, but did not connect to the Apple Home app.

Step 12: Is there another Wemo Light Switch on this circuit? Select either of the following:

a. Yes, there is another Wemo Light Switch on this circuit - if you have another Wemo 3-Way Light Switch that you have installed on the SAME circuit to manage the same light.

b. No, this is the only Wemo Light Switch on this circuit - if this is the only Wemo 3-Way Light Switch you are installing, or you have another Wemo 3-Way Light Switch, but it’s NOT installed on the same circuit.

NOTE: When in doubt, select No.

Step 13: If you have selected Yes, you will be prompted to make this Light Switch secondary. Tap on Make It Secondary. Otherwise, skip this step.

Step 14: Give your Wemo 3-Way Light Switch a personalized name then tap NEXT.

Step 15: If prompted, enter your email address then tap NEXT.

Step 16: Select and connect to your home Wi-Fi.

Step 17: Enter your Wi-Fi Password then tap Join.

You have now set up your Wemo 3-Way Light Switch.

NOTES:

If you have another Wemo 3-Way Light Switch to set up, begin the process again by adding a Wemo or go back to Step 1.
If you have grouped two Wemo 3-Way Light Switches and one became the secondary switch, they will both act as one and only the primary switch will appear in the Device list.