The Smart Device Compare comparison

Ring Motion Detector (3rd Gen) vs Shelly BLU Motion ZB

Understand the differences. Decide what matters to your home.

Before you compare every specification

Key differences between Ring Motion Detector (3rd Gen) and Shelly BLU Motion ZB

A summary of selected recorded differences between these motion sensors. Check the full specification table below for details and conditions.

Feature differences among your selected devices

Bluetooth (connectivity): Ring Motion Detector (3rd Gen) — No; Shelly BLU Motion ZB — Yes (Bluetooth 5 (LE) broadcasting in the BTHome format, running simultaneously with Zigbee. Remote control needs a Shelly BLU Gateway or a Shelly Plus, Pro, Gen3 or Gen4 device as the bridge.).
Light (sensors): Ring Motion Detector (3rd Gen) — No; Shelly BLU Motion ZB — Yes (Built-in lux sensor reporting three levels (dark, twilight, bright) with configurable thresholds, 50 lx dark and 500 lx bright by default.).

Specifications to check side by side

Z Wave (connectivity): Ring Motion Detector (3rd Gen) — Z-Wave Hub required; Shelly BLU Motion ZB — No.
Zigbee (connectivity): Ring Motion Detector (3rd Gen) — No; Shelly BLU Motion ZB — Zigbee Hub required (Zigbee 3.0 end device (IAS Zone 0x000D, profile 0x104, 802.15.4), so it joins an existing Zigbee coordinator.).
Alexa (integrations): Ring Motion Detector (3rd Gen) — Yes; Shelly BLU Motion ZB — Shelly gateway required (Reaches Amazon Alexa through the Shelly Smart Control account, and the product page states that a compatible Bluetooth or Zigbee gateway is required for automations and app control.).
Google Home (integrations): Ring Motion Detector (3rd Gen) — No; Shelly BLU Motion ZB — Shelly gateway required (Reaches Google Home through the Shelly Smart Control account, and the product page states that a compatible Bluetooth or Zigbee gateway is required for automations and app control.).

Information still to confirm

5 of 25 comparison fields lack a resolved value for at least one selected device. Missing information is not evidence that a feature is absent.
Check the full table and manufacturer documentation before ruling out a device.

These observations are derived from recorded catalog data and have not all been independently verified. Confirm details with the manufacturer before purchasing.

Compare capabilities, compatibility and setup requirements.

Option 1 · Ring

Ring Motion Detector (3rd Gen)

Last updated October 2026

View full device profile

Option 2 · Shelly

Shelly BLU Motion ZB

Last updated October 2026

View full device profile

What the catalog tells us

Understand the tradeoffs.

These counts describe the available data, not a quality score. More features do not automatically make a better device.

9differences with recorded values for every device

5rows with missing or unspecified information

Consider your setup

Battery Life

Ring Motion Detector (3rd Gen)2 years
Shelly BLU Motion ZB5 years

Compare the stated test conditions. Catalog battery figures alone do not predict runtime in your home.

Inspect the specifications

Your priorities, side by side

Focus on what changes.

Mark the specifications you care about. Open manufacturer sources for verification scope; fields without citations remain catalog data. Expand notes for other qualifications.

Differences onlyMy priorities (0)

Showing 25 of 25 rows. “Not recorded” does not mean “No”.

Reading layout

Alerts

Low Battery Alerts

Ring Motion Detector (3rd Gen): Yes
Catalog note
The Ring app sends a low battery warning when the batteries need replacing
Shelly BLU Motion ZB: Yes
Catalog note
IAS Zone status bit 3 flags a battery at or below 15 percent, and the battery percentage is also broadcast over BTHome.

Motion Alerts

Ring Motion Detector (3rd Gen): Yes
Shelly BLU Motion ZB: Yes
Catalog note
Every motion detection is broadcast as an event over BTHome and sent over Zigbee to the bound devices, and the app can push a notification when movement is detected.

Connectivity

2.4 GHz Wi-Fi

Ring Motion Detector (3rd Gen): No
Shelly BLU Motion ZB: No

5 GHz Wi-Fi

Ring Motion Detector (3rd Gen): No
Shelly BLU Motion ZB: No

Bluetooth

Ring Motion Detector (3rd Gen): No
Shelly BLU Motion ZB: Yes
Catalog note
Bluetooth 5 (LE) broadcasting in the BTHome format, running simultaneously with Zigbee. Remote control needs a Shelly BLU Gateway or a Shelly Plus, Pro, Gen3 or Gen4 device as the bridge.

Thread

Ring Motion Detector (3rd Gen): No
Shelly BLU Motion ZB: No

Z Wave

Ring Motion Detector (3rd Gen): Z-Wave Hub required
Shelly BLU Motion ZB: No

Zigbee

Ring Motion Detector (3rd Gen): No
Shelly BLU Motion ZB: Zigbee Hub required
Catalog note
Zigbee 3.0 end device (IAS Zone 0x000D, profile 0x104, 802.15.4), so it joins an existing Zigbee coordinator.

Features

Angle Of Detection

Ring Motion Detector (3rd Gen): 90°
Shelly BLU Motion ZB: Not recorded

Automations

Ring Motion Detector (3rd Gen): Not recorded
Shelly BLU Motion ZB: Yes
Catalog note
Motion and light-level events trigger scenes and automations from the Shelly Smart Control app, and scripting is available through a gateway.

Detection Timeout

Ring Motion Detector (3rd Gen): Not recorded
Shelly BLU Motion ZB: Yes
Catalog note
Motion hold time is configurable in seconds (60 by default): while movement continues the timer restarts, and a motion clear event is emitted once it expires.

History Records

Ring Motion Detector (3rd Gen): Not recorded
Shelly BLU Motion ZB: Not recorded

Motion Sensitivity

Ring Motion Detector (3rd Gen): Yes
Catalog note
Customizable sensitivity with pet-friendly settings that reduce false alerts from pets under 50 lbs
Shelly BLU Motion ZB: Yes
Catalog note
Three PIR sensitivity levels (low, medium, high), adjustable to cut false triggers from pets or distant movement.

Range Of Detection

Ring Motion Detector (3rd Gen): 9.1 m
Shelly BLU Motion ZB: Not recorded

Integrations

Alexa

Ring Motion Detector (3rd Gen): Yes
Shelly BLU Motion ZB: Shelly gateway required
Catalog note
Reaches Amazon Alexa through the Shelly Smart Control account, and the product page states that a compatible Bluetooth or Zigbee gateway is required for automations and app control.

Apple Home

Ring Motion Detector (3rd Gen): No
Shelly BLU Motion ZB: No
Catalog note
The device documentation lists only Bluetooth 5 LE and Zigbee 3.0, with no Matter or HomeKit profile, and Shelly's compatibility page names only Alexa, Google Home and SmartThings.

Google Home

Ring Motion Detector (3rd Gen): No
Shelly BLU Motion ZB: Shelly gateway required
Catalog note
Reaches Google Home through the Shelly Smart Control account, and the product page states that a compatible Bluetooth or Zigbee gateway is required for automations and app control.

Home Assistant

Ring Motion Detector (3rd Gen): Yes
Catalog note
Ring Alarm motion sensors are exposed to Home Assistant through the ring-mqtt integration
Shelly BLU Motion ZB: Yes
Catalog note
Zigbee2MQTT supports this exact model (SBMO-103Z), exposing occupancy, battery, battery low, light level, the dark and bright thresholds and motion sensitivity. Over Bluetooth it also broadcasts BTHome, which Home Assistant reads natively.

Matter

Ring Motion Detector (3rd Gen): No
Shelly BLU Motion ZB: No
Catalog note
Not in the CSA certified-product database under Shelly Europe Ltd., and the device documentation lists only Bluetooth 5 LE and Zigbee 3.0.

SmartThings

Ring Motion Detector (3rd Gen): No
Shelly BLU Motion ZB: Shelly gateway required
Catalog note
Reaches SmartThings through the Shelly Smart Control account, and the product page states that a compatible Bluetooth or Zigbee gateway is required for automations and app control.

Power

Battery Life

Ring Motion Detector (3rd Gen): 2 years
Shelly BLU Motion ZB: 5 years

Battery Type

Ring Motion Detector (3rd Gen): 2x AA
Shelly BLU Motion ZB: 1x CR2477

Sensors

Light

Ring Motion Detector (3rd Gen): No
Shelly BLU Motion ZB: Yes
Catalog note
Built-in lux sensor reporting three levels (dark, twilight, bright) with configurable thresholds, 50 lx dark and 500 lx bright by default.

Motion

Ring Motion Detector (3rd Gen)

Yes

Catalog note

Passive infrared (PIR) motion detection

Shelly BLU Motion ZB

Yes

Manufacturer source

The ZB variant detects movement.

Shelly BLU Motion ZB manufacturer product page →

Source section: Product description
Model: Shelly BLU Motion ZB
Region: Manufacturer product page; no universal regional compatibility implied
Firmware: Not specified by this source
Checked: 2026-10-04

This evidence is specific to BLU Motion ZB, not the earlier Bluetooth-only model.

Document check only; not a hands-on test or verification of every regional or firmware variant.

Catalog note

PYD1698 passive infrared (PIR) motion sensor.

Temperature

Ring Motion Detector (3rd Gen): No
Shelly BLU Motion ZB: No
Catalog note
The specifications list only a PIR and a light sensor.

Specifications for Ring Motion Detector (3rd Gen) versus Shelly BLU Motion ZB
Specification	Ring Motion Detector (3rd Gen)	Shelly BLU Motion ZB
Alerts
Low Battery Alerts	Yes Catalog note The Ring app sends a low battery warning when the batteries need replacing	Yes Catalog note IAS Zone status bit 3 flags a battery at or below 15 percent, and the battery percentage is also broadcast over BTHome.
Motion Alerts	Yes	Yes Catalog note Every motion detection is broadcast as an event over BTHome and sent over Zigbee to the bound devices, and the app can push a notification when movement is detected.
Connectivity
2.4 GHz Wi-Fi	No	No
5 GHz Wi-Fi	No	No
Bluetooth	No	Yes Catalog note Bluetooth 5 (LE) broadcasting in the BTHome format, running simultaneously with Zigbee. Remote control needs a Shelly BLU Gateway or a Shelly Plus, Pro, Gen3 or Gen4 device as the bridge.
Thread	No	No
Z Wave	Z-Wave Hub required	No
Zigbee	No	Zigbee Hub required Catalog note Zigbee 3.0 end device (IAS Zone 0x000D, profile 0x104, 802.15.4), so it joins an existing Zigbee coordinator.
Features
Angle Of Detection	90°	Not recorded
Automations	Not recorded	Yes Catalog note Motion and light-level events trigger scenes and automations from the Shelly Smart Control app, and scripting is available through a gateway.
Detection Timeout	Not recorded	Yes Catalog note Motion hold time is configurable in seconds (60 by default): while movement continues the timer restarts, and a motion clear event is emitted once it expires.
History Records	Not recorded	Not recorded
Motion Sensitivity	Yes Catalog note Customizable sensitivity with pet-friendly settings that reduce false alerts from pets under 50 lbs	Yes Catalog note Three PIR sensitivity levels (low, medium, high), adjustable to cut false triggers from pets or distant movement.
Range Of Detection	9.1 m	Not recorded
Integrations
Alexa	Yes	Shelly gateway required Catalog note Reaches Amazon Alexa through the Shelly Smart Control account, and the product page states that a compatible Bluetooth or Zigbee gateway is required for automations and app control.
Apple Home	No	No Catalog note The device documentation lists only Bluetooth 5 LE and Zigbee 3.0, with no Matter or HomeKit profile, and Shelly's compatibility page names only Alexa, Google Home and SmartThings.
Google Home	No	Shelly gateway required Catalog note Reaches Google Home through the Shelly Smart Control account, and the product page states that a compatible Bluetooth or Zigbee gateway is required for automations and app control.
Home Assistant	Yes Catalog note Ring Alarm motion sensors are exposed to Home Assistant through the ring-mqtt integration	Yes Catalog note Zigbee2MQTT supports this exact model (SBMO-103Z), exposing occupancy, battery, battery low, light level, the dark and bright thresholds and motion sensitivity. Over Bluetooth it also broadcasts BTHome, which Home Assistant reads natively.
Matter	No	No Catalog note Not in the CSA certified-product database under Shelly Europe Ltd., and the device documentation lists only Bluetooth 5 LE and Zigbee 3.0.
SmartThings	No	Shelly gateway required Catalog note Reaches SmartThings through the Shelly Smart Control account, and the product page states that a compatible Bluetooth or Zigbee gateway is required for automations and app control.
Power
Battery Life	2 years	5 years
Battery Type	2x AA	1x CR2477
Sensors
Light	No	Yes Catalog note Built-in lux sensor reporting three levels (dark, twilight, bright) with configurable thresholds, 50 lx dark and 500 lx bright by default.
Motion	Yes Catalog note Passive infrared (PIR) motion detection	Yes Manufacturer source The ZB variant detects movement. Shelly BLU Motion ZB manufacturer product page → Source section Product description Model Shelly BLU Motion ZB Region Manufacturer product page; no universal regional compatibility implied Firmware Not specified by this source Checked 2026-10-04 This evidence is specific to BLU Motion ZB, not the earlier Bluetooth-only model. Document check only; not a hands-on test or verification of every regional or firmware variant. Catalog note PYD1698 passive infrared (PIR) motion sensor.
Temperature	No	No Catalog note The specifications list only a PIR and a light sensor.

Know what’s behind the comparison.

The table matches specifications by section and field. It preserves notes, separates missing data from explicit “No” values, and keeps qualifications attached to their values. No overall winner is assigned from feature counts.

Read our comparison methodology