The Smart Device Compare comparison

Nuki Door Sensor vs Ring Window and Door Contact Sensor (2nd gen)

Understand the differences. Decide what matters to your home.

Before you compare every specification

Key differences between Nuki Door Sensor and Ring Window and Door Contact Sensor (2nd gen)

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

Feature differences among your selected devices

Bluetooth (connectivity): Nuki Door Sensor — Yes (Bluetooth 5.0, range up to 10 m, pairs with Nuki Smart Lock); Ring Window and Door Contact Sensor (2nd gen) — No.

Specifications to check side by side

Z Wave (connectivity): Nuki Door Sensor — No; Ring Window and Door Contact Sensor (2nd gen) — Z-Wave Hub required.
Battery Life (power): Nuki Door Sensor — 2 years; Ring Window and Door Contact Sensor (2nd gen) — 3 years.
Battery Type (power): Nuki Door Sensor — 1/2 AA; Ring Window and Door Contact Sensor (2nd gen) — 2x CR2032.

Information still to confirm

8 of 30 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 · Nuki

Nuki Door Sensor

Last updated October 2026

View full device profile

Option 2 · Ring

Ring Window and Door Contact Sensor (2nd gen)

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.

4differences with recorded values for every device

8rows with missing or unspecified information

Consider your setup

Battery Life

Nuki Door Sensor2 years
Ring Window and Door Contact Sensor (2nd gen)3 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 30 of 30 rows. “Not recorded” does not mean “No”.

Reading layout

Alerts

Door Window Alerts

Nuki Door Sensor: Yes
Ring Window and Door Contact Sensor (2nd gen): Yes

Low Battery Alerts

Nuki Door Sensor: Not recorded
Ring Window and Door Contact Sensor (2nd gen): Not recorded

Motion Alerts

Nuki Door Sensor: No
Ring Window and Door Contact Sensor (2nd gen): No

Tamper Alerts

Nuki Door Sensor: Not recorded
Ring Window and Door Contact Sensor (2nd gen): Yes
Catalog note
Ring documents resolving a tampered Contact Sensor (1st and 2nd Gens): the tamper switch sounds the Alarm siren and shows the Tampered indicator in the app

Temperature Alerts

Nuki Door Sensor: No
Ring Window and Door Contact Sensor (2nd gen): No

Connectivity

2.4 GHz Wi-Fi

Nuki Door Sensor: No
Ring Window and Door Contact Sensor (2nd gen): No

5 GHz Wi-Fi

Nuki Door Sensor: No
Ring Window and Door Contact Sensor (2nd gen): No

Bluetooth

Nuki Door Sensor: Yes
Catalog note
Bluetooth 5.0, range up to 10 m, pairs with Nuki Smart Lock
Ring Window and Door Contact Sensor (2nd gen): No

Other

Nuki Door Sensor: No
Ring Window and Door Contact Sensor (2nd gen): No

Thread

Nuki Door Sensor: No
Ring Window and Door Contact Sensor (2nd gen): No

Z Wave

Nuki Door Sensor: No
Ring Window and Door Contact Sensor (2nd gen): Z-Wave Hub required

Zigbee

Nuki Door Sensor: No
Ring Window and Door Contact Sensor (2nd gen): No

Features

Automations

Nuki Door Sensor: Yes
Ring Window and Door Contact Sensor (2nd gen): Not recorded

History Records

Nuki Door Sensor: Not recorded
Ring Window and Door Contact Sensor (2nd gen): Not recorded

Minimum Detection Distance

Nuki Door Sensor: Not recorded
Ring Window and Door Contact Sensor (2nd gen): Not recorded

Ota

Nuki Door Sensor: Not recorded
Ring Window and Door Contact Sensor (2nd gen): Not recorded

Sensitivity

Nuki Door Sensor: Not recorded
Ring Window and Door Contact Sensor (2nd gen): Not recorded

Integrations

Alexa

Nuki Door Sensor: Yes
Catalog note
Nuki lists the Door Sensor as compatible with Alexa: paired to a Nuki smart lock and Nuki Web, its open and closed state can be used in Alexa routines
Ring Window and Door Contact Sensor (2nd gen): Yes

Apple Home

Nuki Door Sensor: No
Ring Window and Door Contact Sensor (2nd gen): No

Google Home

Nuki Door Sensor: Not recorded
Ring Window and Door Contact Sensor (2nd gen): No

Home Assistant

Nuki Door Sensor: Yes
Catalog note
Official Home Assistant Nuki integration, which exposes the Nuki Smart Lock and its door sensor state
Ring Window and Door Contact Sensor (2nd gen): Yes

Matter

Nuki Door Sensor: No
Ring Window and Door Contact Sensor (2nd gen): No

SmartThings

Nuki Door Sensor: No
Ring Window and Door Contact Sensor (2nd gen): No

Power

Battery Life

Nuki Door Sensor: 2 years
Ring Window and Door Contact Sensor (2nd gen): 3 years

Battery Type

Nuki Door Sensor: 1/2 AA
Ring Window and Door Contact Sensor (2nd gen): 2x CR2032

Sensors

Door Window

Nuki Door Sensor: Yes
Ring Window and Door Contact Sensor (2nd gen): Yes

Light

Nuki Door Sensor: No
Ring Window and Door Contact Sensor (2nd gen): No

Motion

Nuki Door Sensor: No
Ring Window and Door Contact Sensor (2nd gen): No

Occupancy

Nuki Door Sensor: No
Ring Window and Door Contact Sensor (2nd gen): No

Temperature

Nuki Door Sensor: No
Ring Window and Door Contact Sensor (2nd gen): No

Specifications for Nuki Door Sensor versus Ring Window and Door Contact Sensor (2nd gen)
Specification	Nuki Door Sensor	Ring Window and Door Contact Sensor (2nd gen)
Alerts
Door Window Alerts	Yes	Yes
Low Battery Alerts	Not recorded	Not recorded
Motion Alerts	No	No
Tamper Alerts	Not recorded	Yes Catalog note Ring documents resolving a tampered Contact Sensor (1st and 2nd Gens): the tamper switch sounds the Alarm siren and shows the Tampered indicator in the app
Temperature Alerts	No	No
Connectivity
2.4 GHz Wi-Fi	No	No
5 GHz Wi-Fi	No	No
Bluetooth	Yes Catalog note Bluetooth 5.0, range up to 10 m, pairs with Nuki Smart Lock	No
Other	No	No
Thread	No	No
Z Wave	No	Z-Wave Hub required
Zigbee	No	No
Features
Automations	Yes	Not recorded
History Records	Not recorded	Not recorded
Minimum Detection Distance	Not recorded	Not recorded
Ota	Not recorded	Not recorded
Sensitivity	Not recorded	Not recorded
Integrations
Alexa	Yes Catalog note Nuki lists the Door Sensor as compatible with Alexa: paired to a Nuki smart lock and Nuki Web, its open and closed state can be used in Alexa routines	Yes
Apple Home	No	No
Google Home	Not recorded	No
Home Assistant	Yes Catalog note Official Home Assistant Nuki integration, which exposes the Nuki Smart Lock and its door sensor state	Yes
Matter	No	No
SmartThings	No	No
Power
Battery Life	2 years	3 years
Battery Type	1/2 AA	2x CR2032
Sensors
Door Window	Yes	Yes
Light	No	No
Motion	No	No
Occupancy	No	No
Temperature	No	No

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