The Echo Flex mini smart speaker adds Alexa functionality to any room. And now you can get as many as you need at a discount.

Amazon is currently selling the Echo Flex for just $17. That's $8 off the $25 retail price, the lowest price we've seen for this smart gadget to date. It's one of the best smart home deals we've seen this season and $3 less than the Black Friday price.

The Echo Flex plug-in speaker is the most affordable way to add an Alexa voice assistant to your home.

Reviewers of the Echo Flex loved its hassle-free setup and nifty accessories, giving it a 4 out of 5 star rating; while it lacks the sound quality of the Echo Dot, its routine-friendly motion sensor is a smart skill for any space. It adds.

Design-wise, the Echo Flex looks more like a plug-in carbon monoxide detector than an audio device; its 5.3-ounce 2.8 x 2.6 x 2.0-inch plastic shell is compatible with traditional wall outlets. [Like Amazon's Echo speaker series, it has a status light, dual microphones, a button to activate Alexa, and a microphone switch. There is something like a 3.5mm on each side, and unlike the Echo Dot, the 0.6-inch built-in speaker has no volume controls.

The Echo Flex shines as an intercom, enough to deliver a simple message or last-minute reminder. In our real-world testing, when calling someone, we could clearly hear the person on the other end of the line.

With the optional motion sensor for the Echo Flex ($15), you can create automated smart home routines with Alexa.

Thus, if you are looking for an inexpensive way to implement smart features throughout your home, this $17 Echo Flex is a great choice.