Option 1 · Ring
Ring Window and Door Contact Sensor (2nd gen)
Last updated October 2026
View full device profileThe Smart Device Compare comparison
Ring Window and Door Contact Sensor (2nd gen) vs Sonoff DW2-WIFI
Understand the differences. Decide what matters to your home.
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Key differences between Ring Window and Door Contact Sensor (2nd gen) and Sonoff DW2-WIFI
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
- Tamper Alerts (alerts): Ring Window and Door Contact Sensor (2nd gen) — Yes (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); Sonoff DW2-WIFI — No.
- 2.4 GHz Wi-Fi (connectivity): Ring Window and Door Contact Sensor (2nd gen) — No; Sonoff DW2-WIFI — Yes.
- Google Home (integrations): Ring Window and Door Contact Sensor (2nd gen) — No; Sonoff DW2-WIFI — Yes.
Specifications to check side by side
- Bluetooth (connectivity): Ring Window and Door Contact Sensor (2nd gen) — No; Sonoff DW2-WIFI — For Pairing.
- Z Wave (connectivity): Ring Window and Door Contact Sensor (2nd gen) — Z-Wave Hub required; Sonoff DW2-WIFI — No.
- Battery Type (power): Ring Window and Door Contact Sensor (2nd gen) — 2x CR2032; Sonoff DW2-WIFI — 2x AAA.
Information still to confirm
- 7 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.
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.
6differences with recorded values for every device
7rows with missing or unspecified information
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.
Showing 30 of 30 rows. “Not recorded” does not mean “No”.
Alerts
- Ring Window and Door Contact Sensor (2nd gen)
- Yes
- Sonoff DW2-WIFI
- Yes
- Ring Window and Door Contact Sensor (2nd gen)
- Not recorded
- Sonoff DW2-WIFI
- Yes
Manufacturer source
The app can notify you when the battery is low.
Sonoff DW2-WIFI manufacturer product page →- Source section
- Product description
- Model
- Sonoff DW2-WIFI
- Region
- Manufacturer product page; no universal regional compatibility implied
- Firmware
- Not specified by this source
- Checked
The catalog expresses three months as 90 days; the exact calendar period can vary. Batteries are not included.
Document check only; not a hands-on test or verification of every regional or firmware variant.
- Ring Window and Door Contact Sensor (2nd gen)
- No
- Sonoff DW2-WIFI
- No
- 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
- Sonoff DW2-WIFI
- No
- Ring Window and Door Contact Sensor (2nd gen)
- No
- Sonoff DW2-WIFI
- No
Connectivity
- Ring Window and Door Contact Sensor (2nd gen)
- No
- Sonoff DW2-WIFI
- Yes
- Ring Window and Door Contact Sensor (2nd gen)
- No
- Sonoff DW2-WIFI
- No
- Ring Window and Door Contact Sensor (2nd gen)
- No
- Sonoff DW2-WIFI
- For Pairing
- Ring Window and Door Contact Sensor (2nd gen)
- No
- Sonoff DW2-WIFI
- No
- Ring Window and Door Contact Sensor (2nd gen)
- No
- Sonoff DW2-WIFI
- No
- Ring Window and Door Contact Sensor (2nd gen)
- Z-Wave Hub required
- Sonoff DW2-WIFI
- No
- Ring Window and Door Contact Sensor (2nd gen)
- No
- Sonoff DW2-WIFI
- No
Features
- Ring Window and Door Contact Sensor (2nd gen)
- Not recorded
- Sonoff DW2-WIFI
- Yes
- Ring Window and Door Contact Sensor (2nd gen)
- Not recorded
- Sonoff DW2-WIFI
- 90 days
Manufacturer source
The app retains roughly three months of event history.
Sonoff DW2-WIFI manufacturer product page →- Source section
- Product description
- Model
- Sonoff DW2-WIFI
- Region
- Manufacturer product page; no universal regional compatibility implied
- Firmware
- Not specified by this source
- Checked
The catalog expresses three months as 90 days; the exact calendar period can vary. Batteries are not included.
Document check only; not a hands-on test or verification of every regional or firmware variant.
- Ring Window and Door Contact Sensor (2nd gen)
- Not recorded
- Sonoff DW2-WIFI
- Not recorded
- Ring Window and Door Contact Sensor (2nd gen)
- Not recorded
- Sonoff DW2-WIFI
- Not recorded
- Ring Window and Door Contact Sensor (2nd gen)
- Not recorded
- Sonoff DW2-WIFI
- Not recorded
Integrations
- Ring Window and Door Contact Sensor (2nd gen)
- Yes
- Sonoff DW2-WIFI
- Yes
- Ring Window and Door Contact Sensor (2nd gen)
- No
- Sonoff DW2-WIFI
- No
- Ring Window and Door Contact Sensor (2nd gen)
- No
- Sonoff DW2-WIFI
- Yes
- Ring Window and Door Contact Sensor (2nd gen)
- Yes
- Sonoff DW2-WIFI
- Yes
- Ring Window and Door Contact Sensor (2nd gen)
- No
- Sonoff DW2-WIFI
- No
- Ring Window and Door Contact Sensor (2nd gen)
- No
- Sonoff DW2-WIFI
- No
Power
- Ring Window and Door Contact Sensor (2nd gen)
- 3 years
- Sonoff DW2-WIFI
- Not recorded
- Ring Window and Door Contact Sensor (2nd gen)
- 2x CR2032
- Sonoff DW2-WIFI
- 2x AAA
Sensors
- Ring Window and Door Contact Sensor (2nd gen)
- Yes
- Sonoff DW2-WIFI
- Yes
- Ring Window and Door Contact Sensor (2nd gen)
- No
- Sonoff DW2-WIFI
- No
- Ring Window and Door Contact Sensor (2nd gen)
- No
- Sonoff DW2-WIFI
- No
- Ring Window and Door Contact Sensor (2nd gen)
- No
- Sonoff DW2-WIFI
- No
- Ring Window and Door Contact Sensor (2nd gen)
- No
- Sonoff DW2-WIFI
- No
| Specification | Ring Window and Door Contact Sensor (2nd gen) | Sonoff DW2-WIFI |
|---|---|---|
| Alerts | ||
| Yes | Yes | |
| Not recorded | YesManufacturer sourceThe app can notify you when the battery is low. Sonoff DW2-WIFI manufacturer product page →
The catalog expresses three months as 90 days; the exact calendar period can vary. Batteries are not included. Document check only; not a hands-on test or verification of every regional or firmware variant. | |
| No | No | |
YesCatalog noteRing 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 | No | |
| No | No | |
| Connectivity | ||
| No | Yes | |
| No | No | |
| No | For Pairing | |
| No | No | |
| No | No | |
| Z-Wave Hub required | No | |
| No | No | |
| Features | ||
| Not recorded | Yes | |
| Not recorded | 90 daysManufacturer sourceThe app retains roughly three months of event history. Sonoff DW2-WIFI manufacturer product page →
The catalog expresses three months as 90 days; the exact calendar period can vary. Batteries are not included. Document check only; not a hands-on test or verification of every regional or firmware variant. | |
| Not recorded | Not recorded | |
| Not recorded | Not recorded | |
| Not recorded | Not recorded | |
| Integrations | ||
| Yes | Yes | |
| No | No | |
| No | Yes | |
| Yes | Yes | |
| No | No | |
| No | No | |
| Power | ||
| 3 years | Not recorded | |
| 2x CR2032 | 2x AAA | |
| Sensors | ||
| Yes | Yes | |
| No | No | |
| No | No | |
| No | No | |
| 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