WORDBND.COM - WordTech. It is designed to activate only when residents are out, works indoors, and is limited to one floor of a building.
The firm also unveiled an online games-streaming service and a voice-activated screen that swivels about.
But one campaign group described the drone camera as Amazon's "most chilling home surveillance product" yet.
"It's
difficult to imagine why Amazon thinks anyone wants flying internet
cameras linked up to a data-gathering company in the privacy of their
own home," said Silkie Carlo from Big Brother Watch.
"It's
important to acknowledge the influence that Amazon's product
development is having on communities and the growing surveillance
market."
When the Always Home Cam is triggered by a suspected break-in, owners will get a smartphone alert to let them see live footage.
Amazon said that privacy had been "top of mind" when the machine was designed.
"It
only reports when it's in motion, and when it's not in motion it
actually sits in a dock where it's physically blocked from even being
able to report," explained Leila Rouhi, president of Ring.
"In addition to that, it's built to be loud, so it's really privacy that you can hear."
image captionThe drone's rotor blades are inside a cage, which could help protect pets
The device is set to cost $250 (£192) when it goes on sale. At launch, it will only be available in the US.
"The
Always Home Cam is an incredibly ambitious device that will seem like
something from a science fiction movie for many consumers," commented
Ben Wood from the consultancy CCS Insight.
"I
expect it to generate a huge amount of interest from technology
enthusiasts who are typically the people who embrace smart home
technology first. However, it is also likely to provoke a huge
discussion around privacy and the future role of technology in the
home."
The
Ring division also unveiled a new security camera designed for use in a
car, which monitors for nearby activity when the vehicle is parked.
It
can also start recording video if a driver is pulled over while on a
journey, potentially allowing them to record an interaction with the
police.
Ring's
business has previously been criticised because it has encouraged users
to share their recordings with the authorities. This has prompted
claims that it is normalising surveillance technologies that can intrude
on people's lives.
The
division claims its existing products - including video doorbells,
indoor video cameras, and smart alarm systems - have helped make
neighbourhoods safer.
Global
consumer spending on smart home products is expected to fall about 15%
this year to $44bn (£24.5bn) due to the economic downturn caused by the
Covid-19 pandemic, according to market research firm Strategy Analytics. But it predicts a rebound in 2021.
Amazon's
rivals have previously accused it of anti-competitive behaviour by
selling its products at a lower price than they cost to make, in order
to secure market share.
When
questioned about sales of the firm's Echo speakers in July, chief
executive Jeff Bezos said the firm did not lose money on the range when
they were sold at "list price", but acknowledged they were often on
promotion at a lower cost.
