It's another Prime Day – or a Prime Big Deal Day in Amazon parlance – which means another day where you can save a dollar or two on great new stuff for your smart home. Whether you're looking for a robot helper to clean your floors, an extra set of eyes to watch over your property, or another smart speaker to bark commands to Amazon's Alexa voice assistant, there are some good bargains to be had during Amazon's fall Prime Day event.

As usual, robot vacuums are seeing decent sales, even on the top models which don't see discounts as often as the rest of the bunch. (My advice is: never buy a bot that is not on sale, because it is always on sale). Ecovac's latest flagship robot vacuum cleaner, the X2 Omni, was launched last week and is already $200 off. I started it and it is an impressive machine; its square shape gives it the advantage of getting into corners better than most rounder bots.

Ring's more expensive smart security cameras also get big discounts: the Ring Pro 2 Video Doorbell and Ring Floodlight Cam Pro add radar motion detection and better video quality over the base models. These rarely go on sale and offer up to $100 off. Here's a look at some of the best deals on good products I've seen so far. I'll update this during the sale, so check back often.