Amazon has the TP-Link Kasa Smart Wi-Fi Light Switch on sale today for $27.99. Which is part of its deals for Prime members. This means that you're going to need to be a Prime member to get this deal. If you aren't a Prime member, however, you can sign up for a free trial of Amazon Prime and take advantage of this deal, as well as Prime Day's deals next week.
The TP-Link Kasa Smart Wi-Fi Light Switch is a great light switch to pick up, as it is super easy to install, and it does work with Amazon Alexa, Google Assistant and Apple Siri. So that no matter which smartphone or smart speaker you have, you can use your voice to control this switch. This is also cheaper and more efficient than buying new light bulbs to make your home smarter. As you can replace one switch and it'll make everything connected to it smart again. Not only can you control it with your voice, but you can also use the TP-Link app to control the light and set timers and schedules as well. Now, you will want to avoid using the actual switch to turn on or off the lights here though, as that will turn it off completely, including the WiFi connectivity.
This item is also eligible for Amazon Prime's free shipping. Which includes free two-day shipping, and pretty cheap (usually $3.99) next-day shipping if you need it extra fast. If you are not an Amazon Prime member yet, you can sign up for a free trial of Amazon Prime. You'll get 30 days free (if you're a student, you get 6 months), and then it's $119/year (or $59/year for students). Prime members do get a whole lot more than just free shipping though, so be sure to check out the full benefits.