Image Slideshow Items

  • Ring Motion Detector (3rd Gen)
  • Ring Motion Detector (3rd Gen) photo 2
  • Ring Motion Detector (3rd Gen) photo 3
  • Ring Motion Detector (3rd Gen) photo 4
Last updated October 2026

Ring Motion Detector (3rd Gen)

A 90-degree indoor PIR sensor with pet-friendly sensitivity and two years on AA batteries, though some owners want more range and faster triggers.

4.5
124 ratings

4.5 vs the 4.0 average of 28 motion sensors we track

25% OFF
$39.99
$29.99

Also sold in packs

  • Pack of 221% OFF$54.99$69.99$27.50 per unitYou save $4.99Buy
As an Amazon Associate I earn from qualifying purchases
Launch Year: 2026

Model: 7JFYAB

Open selection
Connectivity
News by email

Not buying today? Get what's new by email

New releases and the smart home news worth knowing, in your inbox.

Smart home news and new releases, straight to your inbox

New releases, comparisons and the smart home news worth knowing.

No spam. Unsubscribe in one click.

Your subscription could not be saved. Please try again.
Please enter a valid email address.
Tick the box above to finish signing up.
We couldn't verify you're human. Please try again.
Too many attempts. Please try again in an hour.
Your subscription has been successful.
Our review

Ring Motion Detector (3rd Gen) Review: An Easy Add-On for Ring Homes

The verdict

The Ring Motion Detector (3rd Gen) is an indoor passive infrared sensor for Ring homes that connects over Amazon Sidewalk with no base station, or over Z-Wave to a Ring Alarm Base Station: a 90-degree field, a rated range of 9.1 m, pet-friendly sensitivity and up to two years on two AA batteries. Owners call it easy to put up, easy to add in the Ring app and reliable, and they like that it takes ordinary AA batteries. The complaints are a shorter detection distance than some expected and, for one owner, triggers too slow to switch a light on through an Alexa routine. It suits Ring and Alexa users adding motion coverage to a room, not Google Home, Apple Home or Matter households.

Best for
  • Ring Alarm and Ring camera owners
  • Alexa users
  • Indoor rooms and hallways
  • Homes with pets

Pros

  • Easy to mount and add in the Ring app
  • Reliable motion alerts, according to owners
  • Up to two years on two standard AA batteries
  • 90-degree field of view
  • Pet-friendly sensitivity settings
  • Works with Alexa and with Home Assistant through ring-mqtt

Cons

  • Some owners find the detection distance short
  • Too slow for light automations, according to one owner
  • Needs Amazon Sidewalk coverage or a Ring Alarm Base Station
  • Indoor only
  • No Google Home, Apple Home, SmartThings or Matter

Who is the Ring Motion Detector (3rd Gen) for?

It is an add-on for people who already use Ring and want motion coverage in another room, a hallway, an entry or a sunroom. Owners buy it as extra security next to their contact sensors, and one long-time Ring Alarm owner says the line has been dependable for years. It connects over Amazon Sidewalk with no base station where Sidewalk coverage reaches, or over Z-Wave to a Ring Alarm Base Station, and it is an indoor sensor with no weather resistance.

What owners like about the Ring Motion Detector (3rd Gen)

Installation is the most common praise: owners describe it as easy to put up and quick to add to the Ring app, especially for anyone who already has other Ring devices. They report that it works reliably, that it lets them know when someone moves through a watched area, and that battery life is long. Owners also like that it runs on standard AA batteries instead of a pack they have to buy new. The spec sheet backs that up with two AA batteries rated for up to two years, motion and low-battery alerts in the Ring app, and adjustable sensitivity with pet-friendly settings for pets under 50 lbs, which one owner learned the other way when his dog walking to the door set it off.

What to know before you buy

Range is the main complaint: two owners say its sensing distance is shorter than they hoped, so place it to cover the approach rather than a far corner of a large room. One owner who wanted it to trigger a smart light switch through an Alexa routine found it too slow on entry and went back to using a camera for that job. Without a Ring Alarm Base Station it relies on Amazon Sidewalk coverage, it works with Alexa and with Home Assistant through the community ring-mqtt integration, and it has no Google Home, Apple Home, SmartThings or Matter support. It senses motion only, with no light or temperature reading.

Is the Ring Motion Detector (3rd Gen) worth it?

For a Ring home, yes: it is simple to add, owners rate it highly and the AA batteries keep upkeep cheap. Buyers who want instant triggers for lighting automations, long detection distances or support outside Ring and Alexa should look at other sensors.

Frequently asked questions

Does the Ring Motion Detector (3rd Gen) need a hub?

No. It connects over Amazon Sidewalk with no base station where Sidewalk coverage reaches, and over Z-Wave when paired with a Ring Alarm Base Station. It is set up in the Ring app.

What batteries does it use and how long do they last?

Two AA batteries, rated for up to two years, and the Ring app sends a low battery warning when they need replacing.

Will my pet set it off?

It has adjustable sensitivity with pet-friendly settings that reduce false alerts from pets under 50 lbs. A pet walking right past it can still trigger it.

How far does it detect motion?

It has a 90-degree field of view and a rated range of 9.1 m (about 30 ft), though some owners find the practical distance shorter.

Does it work with Google Home or Apple Home?

No. It works with Alexa and, through the community ring-mqtt integration, with Home Assistant. Google Home, Apple Home, SmartThings and Matter are not supported.

Can I use it outdoors?

No, it has no weather resistance and is meant for indoor rooms.

Company
Ring logo

Ring

4.6/ 5 avg ratingUSA flagHeadquartered in USA

Ring, owned by Amazon, is a leading home security brand best known for its video doorbells, but its lineup also includes security cameras, alarm systems and smart lighting. Ring devices use the Ring app and the Ring Protect subscription for video history and alerts, and integrate tightly with Alexa. Ring is one of the most popular choices for video doorbells and DIY home security.

Full specifications

Every spec, organized

Browse the full breakdown by category. Tap the on any row for what it means, or the for sources and documentation.

Weather Resistance

NO

Dimensions

2.6 × 2.6 × 1.6 in 66 × 66 × 40 mm

Weight

?

Battery Type

2x AA

Battery Life

2 years

2.4 GHz WiFi

NO

5 GHz WiFi

NO

Bluetooth

NO

Z-Wave

Z-Wave Hub required

Ring lists Z-Wave and Amazon Sidewalk as its connections: Z-Wave goes through a Ring Alarm Base Station, and over Amazon Sidewalk it works with no base station where Sidewalk coverage reaches.

Zigbee

NO

Thread Protocol

NO

Google Home

NO

Alexa

YES

Apple HomeKit

NO

Samsung SmartThings

NO

Home Assistant

YES

Ring Alarm motion sensors are exposed to Home Assistant through the ring-mqtt integration

Matter

NO

Motion

YES

Passive infrared (PIR) motion detection

Light

NO

Temperature

NO

Motion Alerts

YES

Low Battery Alerts

YES

The Ring app sends a low battery warning when the batteries need replacing

Angle of Detection

90°

Range of Detection

29.9 ft 9.1 m

30 ft range with a 90° field of view.

Motion Sensitivity Configuration

YES

Customizable sensitivity with pet-friendly settings that reduce false alerts from pets under 50 lbs

Detection Timeout Configuration

?

Automations

?

History Records

?

Local Control

YES

Spotted something wrong on this page? Tell us and we will fix it.

Ask Chip

Got a question about the Ring Motion Detector (3rd Gen)?

I know its spec sheet, what owners say about it and the rest of the catalog. Ask me about compatibility, alternatives or how it stacks up.

AmazonOur store on AmazonShop our ideas on AmazonLists of the smart home setups we would put together ourselves, ready to add to your Amazon cart.Shop on Amazon
Required to work

You need a Z-Wave controller for this

View all
Why it needs a Z-Wave coordinator

The Ring Motion Detector (3rd Gen) speaks Z-Wave, not Wi-Fi. It needs a Z-Wave controller to join your network and reach your phone or your automations. These are the controllers in our catalog that can run it.

On sale now

More Motion Sensors on sale

View all
Full comparison table

Compare the Ring Motion Detector (3rd Gen) with the other 27 Motion Sensors

All Motion Sensors in the catalog in one table: filter by what you need, sort by price or rating, and see exactly where this one lands.

  • 27 other Motion Sensors
  • 34 specs compared
  • 31 filters
Open the full comparison
Head to head

Ring Motion Detector (3rd Gen) vs the competition

View all
Ring

More from Ring

View all