Upgrading your home with the latest tech can be expensive, but Amazon Prime Day is an opportunity to do so for a lot less. Be it robot vacuums or smart bulbs, there are a whole lot of IoT and kitchen devices on sale today. Even some of our favorites from iRobot, Shark and Google have been discounted. Not all of the sales are actually worth your money, so we've done the hard work of narrowing that list down to the best deals available. One of our favorite smart thermostats is this one from Ecobee, so we're glad that it's on sale today for $178 ($71 off its retail price of $249).

Amazon has discounted most of Ring's Video Doorbells for Prime Day this year. The cheapest of the bunch is the 2020 Ring Video Doorbell, which is 25 percent off and down to $75. The upgraded Ring Video Doorbell 3 is $40 off and down to $160, while the latest model, the Video Doorbell 4, is $50 off and down to $170. While they all have some differences between them, each of these IoT devices do the same thing: let you see who's outside your front door at all times. The standard Video Doorbell likely has everything most people would need in a gadget like this.

Just a couple of months after Ring unwrapped its new, radar-enabled aerial view for the Video Doorbell Pro 2, the Amazon-owned smart brand is now rolling out the clever technology to its updated wired floodlight. At the same time, Ring says it's bringing a color version of its pre-roll video feature to a fourth generation of its battery-powered video doorbell. Slated to ship on May 6 for $250 (you can preorder starting today), the Ring Floodlight Cam Wired Pro will boast both Bird's-Eye View and 3D Motion Detection, a pair of features powered by radar rather than infrared motion sensors. Meanwhile, the Ring Video Doorbell 4 is set to arrive April 28 for $200, and it will add color to the pre-roll functionality that debuted on last year's Video Doorbell 3 Plus. An upgrade to 2019's well received Floodlight Cam, the revamped Floodlight Cam Wired Pro arrives with the same 1080p video resolution while adding HDR for a needed contrast boost, along with a 140-degree (horizontal) by 60-degree (vertical) field of view.

Since smart doorbells first started popping up on front doors across the U.S. in the last decade, Ring and Nest have dominated the video doorbell market. Both brands have a strong reputation and large consumer base--and there's good reason for the fanfare. The two smart home tech companies make sleek and reliable video doorbells that go beyond the basics of many other doorbell cameras, with features like package detection, facial recognition, and continuous recording. To help you decide which is right for you, we're peeling back the layers and analyzing the differences between two popular front door rivals: the Ring Video 3 Plus and the Nest Hello. The Nest Hello (pictured) and the Ring Video Doorbell 3 Plus both retail for $229.

The Ring Video Doorbell (Second Generation) is a refreshed version of Ring's entry-level product that integrates features from some of the company's more expensive doorbells while keeping the same $100 price tag (substantially less when it's on sale, as it was at the time of this review). Compared to the original Ring Video Doorbell, first offered for sale in late 2014, the second-generation model offers video at 1080p resolution compared to the original's 720p. Higher resolution is better with any type of camera, and in the doorbell, it will mean a sharper image with a better chance of discerning fine detail, should you need that. The second-gen product also has improved night vision and new motion zone settings, but if you want a battery that you can remove for recharging--or if you want to keep a spare battery on hand that you can swap out when the one in the camera inevitably dies--then you should look at the Ring Video Doorbell 3 or 3 Plus. The latter doorbells can also connect to less-crowded 5GHz Wi-Fi networks where this less-expensive model has only a 2.4GHz Wi-Fi adapter onboard.