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  • Entry Sensor
  • Entry Sensor
Last updated June 2026

Eufy Entry Sensor

4.6
2,010 ratings
Launch Year: 2018

Model: AK-848061058666

$29.99
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Our review

eufy Security Entry Sensor Review: A Reliable, Subscription-Free Door Sensor for the eufy Ecosystem

A dependable contact sensor that triggers eufy's siren, chime and cameras with no monthly fee and multi-year battery life, but it needs a HomeBase and doesn't work with HomeKit, Alexa or Google.

The verdict

The eufy Security Entry Sensor is a dependable door and window contact sensor built for the eufy Security ecosystem. Owners praise how well it works with a eufy HomeBase, pairing easily, triggering the built-in siren, camera sirens and recordings, and sounding a chime when a door opens, all with no monthly subscription, which is a big selling point. It is very reliable with a 1 to 2 second response, and battery life is excellent, the CR123A cell typically lasts two to three years (one owner changed it once in four years), which owners note beats smaller CR2032-based competitors. Installation is easy with repositionable adhesive (or optional screws) as long as you keep the sensor and magnet within about 4cm, and the app is highly customizable, with home/away/night modes, time-based alarms and granular notifications. eufy's customer support also earns praise for responsiveness and adding requested features over time. The main limitations: it requires a HomeBase (it isn't standalone), and it doesn't integrate with Apple HomeKit, Alexa, Google or Matter, in fact integration is limited even among some eufy products. The eufy app can also be buggy, the sensor is larger than some rivals and uses a less-common battery, and the magnet housing is a bit flimsy. For a eufy Security household, it's an easy, no-fee addition.

Best for
  • Existing eufy Security / HomeBase systems
  • Subscription-free DIY security
  • Long battery life
  • Triggering eufy sirens and cameras

Pros

  • Deep integration with eufy HomeBase, cameras and sirens, no monthly fee
  • Very reliable with 1 to 2 second response times
  • Excellent battery life (CR123A often lasts 2 to 3 years)
  • Easy install with repositionable adhesive or optional screws
  • Highly customizable app with home/away/night modes and chimes
  • Responsive customer support

Cons

  • Requires a eufy HomeBase; not standalone
  • No Apple HomeKit, Alexa, Google or Matter support
  • eufy app can be buggy after updates
  • Larger than some rivals; uses a less-common CR123A battery
  • Flimsy magnet housing; battery cover can pop off if mounted on the door

Who is the eufy Entry Sensor for?

This is a door and window contact sensor designed to work within the eufy Security ecosystem, it requires a eufy HomeBase and is not standalone. It sends open/close alerts, triggers the HomeBase siren, camera sirens and recordings, and can sound a chime, all with no monthly subscription. It runs on a CR123A battery rated around 2 years and supports Home Assistant, but not Apple HomeKit, Alexa, Google or Matter. It best suits people who already have or are building a eufy Security system with a HomeBase, want subscription-free DIY security, value long battery life, and want to tie door/window events into eufy sirens and cameras. If you want a standalone sensor or one that works with HomeKit, Alexa or Google, this isn't it.

What buyers love

Ecosystem integration is the standout: the sensor pairs easily with a eufy HomeBase 2 or 3 and works seamlessly with eufy cameras and doorbells, triggering a 100dB indoor siren, outdoor camera sirens, camera recordings, and audible chimes when a door or window opens, and setting up home/away routines, all with no monthly fee, which owners repeatedly highlight. Reliability is excellent, with 1 to 2 second response times and units still working perfectly after four or five years. Battery life is another strong point: the CR123A cell commonly lasts two to three years, and owners note it outlasts smaller CR2032-based sensors. Installation is easy using the repositionable adhesive pads (or optional screws), and owners appreciate being able to nudge the pieces to find the best spot, keeping the magnet within about 4cm of the sensor. The app is highly customizable, with adjustable volume, granular notifications, and night/sleep modes that can trigger a loud alarm if a door opens after a set time. Owners also praise eufy's customer support, which has responded to feedback and added requested features (like a door chime) over time, and value the fully self-installed, no-subscription DIY approach.

What to know before you buy

The key limitation is that it isn't standalone: it requires a eufy HomeBase to function. Just as important, it does not integrate with Apple HomeKit, Alexa, Google Home or Matter, several owners specifically wish for HomeKit, and integration is limited even within eufy's own lineup (arming the alarm doesn't necessarily switch every eufy device, like a floodlight cam, into away mode). The eufy app can be buggy, sometimes working perfectly and then breaking after an update. Physically, this sensor is larger than some competitors and uses a less-common CR123A battery, which a few owners worry about for cost and availability (though it lasts a long time). The magnet housing is a bit flimsy: on porous or unpainted surfaces the adhesive can struggle against the magnetic pull, the mounting screw is tiny, and the battery cover can pop off if you mount the larger piece on the moving door, owners recommend mounting the battery half on the fixed frame instead. It's also indoor use only, and you should verify signal strength to the HomeBase before permanently mounting a sensor far from it.

Is the eufy Entry Sensor worth it?

For a eufy Security household, the eufy Security Entry Sensor is an easy, worthwhile addition: reliable, quick to respond, with multi-year battery life, easy repositionable install, deep integration with eufy sirens, chimes and cameras, and no monthly fee, backed by responsive support and a highly customizable app. The trade-offs are that it needs a HomeBase, doesn't work with HomeKit, Alexa, Google or Matter (and has limited cross-integration even within eufy), the app can be buggy, and the magnet housing is a little flimsy. Buy it if you're building or expanding a eufy Security system and want subscription-free door and window coverage; if you want a standalone sensor or broad smart-home platform support, choose a different sensor.

Frequently asked questions

Does it need a eufy HomeBase?

Yes. The Entry Sensor is not standalone, it requires a eufy HomeBase to work. Once paired, it triggers the HomeBase siren, camera sirens and recordings, and chimes, and lets you set home/away routines, all with no monthly subscription.

Does it work with Apple HomeKit, Alexa or Google?

No. It works within the eufy Security ecosystem (and with Home Assistant), but it does not integrate with Apple HomeKit, Alexa, Google Home or Matter. Several owners specifically wish for HomeKit support, and note integration is limited even among some eufy products.

How long does the battery last?

A long time. It uses a CR123A battery rated around 2 years, and in practice owners often get two to three years, with one changing it just once in four years. It's a less-common battery than a CR2032, but it outlasts smaller sensors, so replacements are infrequent.

Is it hard to install?

No, it's easy. The repositionable adhesive lets you nudge the two pieces to find the best spot (keep the magnet within about 4cm of the sensor), and screws are optional. Tips from owners: test placement with masking tape first, check HomeBase signal strength before mounting far away, and mount the larger battery half on the fixed frame so the cover doesn't pop off.

Does it require a subscription?

No, and that's a key selling point. All core functions, open/close alerts, siren and camera triggering, chimes, and home/away modes, work with no monthly fee. Optional 24/7 professional monitoring is available but not required.

At a glance

Summary

Everything this door & window sensor supports, grouped by category.

Size & Materials
Sensor Dimensions (73 x 27 x 22 mm)Sensor Weight (68g)
Connectivity
2.4 GHz WiFi (HomeBase required)
Integrations
Home Assistant
Sensors
Door & Window Open/Close
Alerts
Door & Window Open/Close Alerts

Price History

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Company
Eufy logo

Eufy

4.3/ 5 avg ratingChina flagHeadquartered in China

Eufy, a brand of Anker, makes a wide range of smart home and security devices including robot vacuums, security cameras, video doorbells and smart locks. Eufy emphasizes local storage and subscription-free options for its cameras, appealing to privacy-conscious buyers. Its products integrate with Alexa and Google Home.

Full specifications

Every spec, organized

Browse the full breakdown by category. Tap the on any row for what it means, or the for sources and documentation.

Size & Materials

Weather Resistance

NO

Sensor Dimensions

73 x 27 x 22 mm

Magnet Dimensions

?

Sensor Weight

2.4 oz (68 g)

Magnet Weight

?

Power

Battery Type

CR123A

Battery Life

2 year

Connectivity

2.4 GHz WiFi

HomeBase required

Sub-1G connection between the alarm and the base. WiFi connection on the base.

5 GHz WiFi

NO

Bluetooth

NO

Z-Wave

NO

Zigbee

NO

Thread Protocol

NO

Other

NO

Integrations

Google Home

NO

Alexa

NO

Apple HomeKit

NO

Samsung SmartThings

NO

Home Assistant

YES

IFTTT

NO

Matter

NO

Sensors

Door & Window Open/Close

YES

Light

NO

Motion

NO

Occupancy

NO

Temperature

NO

Alerts

Door & Window Open/Close Alerts

YES

Motion Alerts

NO

Temperature Alerts

NO

Tamper Alerts

NO

Low Battery Alerts

?

Features

Minimum Detection Distance

?

Sensitivity Configuration

?

Automations

?

History Records

?

OTA

?

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