Live nowPrime Day 2026October 6 to 7, 2026Starts in--d--h--m--sSee the deals
Door & Window Sensors · Head to head

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

Full Smart Door & Window Sensors comparison in 2026

Updated October 2026
Data from Amazon and official Eufy and Ring sites.
2026 verdict
Ring Window and Door Contact Sensor (2nd gen) takes this security sensor comparison against the Eufy Entry Sensor, with a longer rated battery and more ways to connect.
Ring Window and Door Contact Sensor (2nd gen)
Winner
Ring Window and Door Contact Sensor (2nd gen)
$14.99
Buy on Amazon USACheck price
Its two CR2032 cells are rated for 3 years against 2 years for the Eufy's CR123A, it is slimmer on the frame, and it works with Alexa and Home Assistant alongside the Ring app. The Eufy Entry Sensor is the one for eufy Security homes: it pairs with a eufy HomeBase, triggers its siren and eufy cameras, and owners value doing all of it without a monthly fee, though beyond the eufy app it only reaches Home Assistant. Both are alarm system sensors, not standalone ones, so the base station you own or plan to buy decides most of it. Choose the Ring Window and Door Contact Sensor (2nd gen) for a Ring Alarm, and the Eufy Entry Sensor for a eufy HomeBase.
vs
Price alerts

Door & Window Sensor prices change while you decide

We check the price of every Door & Window Sensor in the catalog daily and email you the drops, whichever one you pick.

Smart home deals and news, straight to your inbox

Price drops, new releases 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.
Your subscription has been successful.
FeatureEufy Entry SensorRing Window and Door Contact Sensor (2nd gen)Winner
Price$29.99$14.99Ring Window and Door Contact Sensor (2nd gen)
Rating4.64.7Ring Window and Door Contact Sensor (2nd gen)
Battery Life2 years3 yearsRing Window and Door Contact Sensor (2nd gen)
IntegrationsHome AssistantAlexa, Home AssistantRing Window and Door Contact Sensor (2nd gen)
AlertsDoor & Window Open/Close AlertsDoor & Window Open/Close Alerts, Tamper AlertsRing Window and Door Contact Sensor (2nd gen)
Warranty1 year1 yearTie
Weather ResistanceNONOTie
Connectivity2.4 GHz WiFiZ-WaveTie
SensorsDoor & Window Open/CloseDoor & Window Open/CloseTie

What the differences mean

Alarm system

The Eufy Entry Sensor talks to a eufy HomeBase over its own sub-GHz link, and the HomeBase connects to Wi-Fi. The Ring Window and Door Contact Sensor (2nd gen) uses Z-Wave to reach a Ring Alarm base station. Neither works with the other's system.

Smart home reach

The Ring sensor works with Alexa and Home Assistant; the Eufy sensor works with Home Assistant only, since the eufy Security Alexa skill does not expose HomeBase sensors. Neither supports Google Home, Apple Home or Matter.

Battery

Ring rates its two CR2032 coin cells for 3 years, eufy rates its single CR123A for 2. Coin cells are easy to find; the CR123A is less common but owners report it lasting well.

Size

The Ring body is 53 x 28 x 14 mm and the Eufy 73 x 27 x 22 mm and 68 g. The Ring is the more discreet of the two on a window frame.

Which one to buy if

What owners say

Owners of both report fast, reliable alerts, easy stick-on mounting and long battery life, and both groups stress that the sensor is useless without its base station. Eufy Entry Sensor owners single out how well it ties into a eufy HomeBase, with sirens, camera recordings and door chimes and no monthly fee, and praise eufy's support; they complain about a buggy app after updates, a bulky body, a flimsy magnet housing and a battery cover that can pop off on the moving door. Ring Window and Door Contact Sensor (2nd gen) owners praise a slim design, pairing in minutes and Ring's quick replacements, but say history needs a Ring Protect plan, the adhesive is weak, and metal doors or curved trim can leave it stuck in a Tampered state.

Price history compared

Every price change of both, in the same store, so the gap between the two lines is what one costs more than the other.

  • Eufy Entry Sensor
  • Ring Window and Door Contact Sensor (2nd gen)

Loading price history...

Frequently Asked Questions

Which is better overall: Eufy Entry Sensor or Ring Window and Door Contact Sensor (2nd gen)?

The Ring Window and Door Contact Sensor (2nd gen) wins on rated battery life, slimmer size and Alexa plus Home Assistant support. The Eufy Entry Sensor is still the right pick for a home built on a eufy HomeBase and eufy cameras.

What is the biggest difference between the Eufy Entry Sensor and the Ring Window and Door Contact Sensor (2nd gen)?

The alarm system behind them. The Eufy Entry Sensor needs a eufy HomeBase, while the Ring Window and Door Contact Sensor (2nd gen) needs a Ring Alarm base station, and neither works with the other.

Is the Eufy Entry Sensor worth it?

For a eufy Security home, yes: the Eufy Entry Sensor ties into the HomeBase siren and eufy cameras, and its CR123A battery is rated for 2 years. Without a eufy HomeBase it does nothing, so a Ring Alarm home is better served by the Ring Window and Door Contact Sensor (2nd gen).

Do the Eufy Entry Sensor and the Ring Window and Door Contact Sensor (2nd gen) work with Alexa or Google?

The Ring Window and Door Contact Sensor (2nd gen) works with Alexa; the Eufy Entry Sensor does not. Neither works with Google Home, and both work with Home Assistant.

Who should buy the Eufy Entry Sensor?

eufy Security owners with a HomeBase who want door and window alerts, sirens and camera recordings tied together in one app.

Who should buy the Ring Window and Door Contact Sensor (2nd gen)?

Ring Alarm owners who want slim, long-lasting contact sensors that also show up in Alexa and Home Assistant.

Full comparison table

Compare all 28 Door & Window Sensors side by side

You are looking at two of them. The full table lines up all Door & Window Sensors in the catalog with the same specs, so you can filter by what you need and sort by price or rating.

  • 28 Door & Window Sensors
  • 40 specs compared
  • 35 filters
Open the full comparison
More Door & Window Sensors

Top Door & Window Sensors to compare next

28 door and window sensors from 18 brands compared: Aqara, Aeotec, Sonoff, Fibaro and more. Zigbee, Z-Wave and Wi-Fi options, battery life and size.

All Door & Window Sensors
Eufy

More Eufy products

A sharper look at other Eufy products worth comparing.

Explore Eufy
Ring

More Ring products

A sharper look at other Ring products worth comparing.

Explore Ring
Independent · Not sponsoredBrands never pay for placement or rankings. Affiliate commissions never influence our comparisons.
© 2026 Smart Home Compared
Search