It works cloud-to-cloud. No additional device is required.
When connected to IFTTT the Kevo Smart Lock becomes a trigger device that communicates to another device on the IFTTT web service to execute an action. Example recipes are:
- Lock Kevo Smart Lock and automatically turn Philips Hue Lights off
- Unlock Kevo Smart Lock and automatically turn a device that is plugged into a Wemo smart plug on