Amazon.com: Wemo Smart Light Switch with Thread - Smart Switch for Apple HomeKit - 3 Way Switch Compatible - Smart Home Devices - HomeKit Light Switch - Apple Home - Requires Neutral
Belkin Official Support - How to install your Wemo WiFi Smart Light Switch, WLS040
Belkin Official Support - Setting up a Wemo 3-Way Light Switch using your iOS device
How To: Wemo light switch installation, no neutral — OneHourSmartHome.com
Best Buy: WeMo WiFi Smart Dimmer white WDS060
WeMo 3-Way Light Switch White WLS0403 - Best Buy
Basic Setup for Your WeMo Light Switch - Support.com TechSolutions