B&H Photo Video offers the Belkin Wemo Smart Dimmer Switch in White for $69.99 with free shipping. (Best Buy via eBay and Amazon charge the same.) That's the lowest price we could find by $10. It replaces your single-pole light switch and allows you to dim and turn lights on and off remotely via the Wemo app for iOS or Android. Features include 802.11n wireless, a night mode setting, and voice control via Amazon Alexa or Google Assistant.