eufy Security Entry Sensor, Detects Opened and Closed Doors or Windows

Price: $29.99
(as of Oct 09, 2026 07:26:40 UTC – Details)

Product description

eufy security alarm system

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Customer Reviews

4.5 out of 5 stars 3,123

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4.4 out of 5 stars 235

4.4 out of 5 stars 235

4.4 out of 5 stars 26

4.2 out of 5 stars 80

4.6 out of 5 stars 2,012

Price

$24.99$24.99

$299.99$299.99

$39.99$39.99

$29.99$29.99

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$39.99$39.99

$29.99$29.99

Application

Intrusion / Burglary

Intrusion / Burglary

Intrusion / Burglary

Intrusion / Burglary

Intrusion / Burglary

Flooding / Freezing

Intrusion / Burglary

Power Supply

Battery

CR123A

CR123A

CR123A

CR123A ×2

CR123A

CR123A

Battery Life

2 years

5 Years

5 years

5 years

2 Years

5 years

2 years

Homebase Required

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✔

✔

✔

✔

✔

✔

Monthly Fee

✘

✘

✘

✘

✘

✘

✘

App Alerts

✔

✔

✔

✔

✔

✔

✔

Easy Installation

✔

✔

✔

✔

✔

✔

✔

Tamper Protection

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Supported

Supported

Supported

Supported

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2-year Battery Life: One battery provides 800 days of monitoring.
For Doors And Windows: Compact and versatile design fits onto any door or window frame. Requires eufy Security HomeBase.
100-decibel Siren: Enable or disable siren protection, which triggers a 100-decibel siren on HomeBase, and sends an alert to your smartphone when forced entry is detected.
Optional 24/7 Protection Service: New optional 24/7 professional monitoring service is now available for 24/7 emergency police, fire and medical response when your alarm system is triggered.
What’s Included: Entry Sensor, CR123A Battery, Magnet, 3 x Mounting Screws, Owner’s Manual.
Customers find the entry sensor reliable, working well with Eufy HomeBase 2, and consider it a great door sensor. The connectivity receives mixed feedback – while it pairs easily with Eufy HomeBase 2, it’s not compatible with Alexa or HomeKit. Notifications are also mixed, with some customers getting alerts for every door opening while others find them too frequent. Battery life and adhesive performance get mixed reviews – while the battery lasts a long time, some report it only lasting a couple months, and though the adhesive is strong, some mention it’s not sticky enough. Value for money opinions are divided between those who find it worth the price and those who don’t.