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Securing the entry points of your home requires choosing between standalone magnetic contacts, specialized perimeter detectors, and complete multi-device hardware bundles. When shopping for a eufy security door sensor, the primary decision centers on whether you are expanding an existing smart hub ecosystem or building an entirely new setup from the ground up. Magnetic contact sensors track the exact physical separation of doors and window casements, while complementary motion and acoustic detectors monitor the wider space around those entry points. Selecting the right combination ensures reliable perimeter awareness without leaving blind spots across high-traffic hallways or secondary basement entries.
The eufy security catalog organizes these protection devices across distinct tiers, ranging from individual entry contacts and acoustic glass detectors to bundled kits anchored by local storage hubs. Standalone hardware, such as the classic eufy entry sensor, relies on a centralized base station to process alerts and sound local alarms, meaning independent units cannot function in total isolation. For comprehensive perimeter planning, the manufacturer offers all-in-one bundles like the eufy 5 piece alarm kit or advanced setups anchored by the eufy homebase 3 s380. Understanding hub compatibility, mounting mechanics, and sensor detection boundaries makes it easy to select the best eufy door sensors for your floor plan.
eufy Door Sensors Lineup at a Glance
| Model | Sensor Type | Battery Life & Power | Hub & Compatibility |
|---|---|---|---|
| eufy Security Entry Sensor | Contact Sensor | 2 years (CR123A lithium) | Requires eufy Security HomeBase |
| eufy Security Entry Sensor (Renewed) | Contact Sensor | 2 years (CR123A lithium) | Requires HomeBase, HomeBase E, or HomeBase 2 |
| eufy Security 5-Piece Home Alarm Kit | Contact & Motion Kit | Battery powered (multi-device) | Standalone system with included keypad |
| eufy Security HomeBase3 S380 Hub+4-Pack Entry | Contact Sensor & Hub | 5 years per sensor | HomeBase S380 included (expandable storage) |
| eufy Security Glass Break Sensor E10 | Acoustic Glass Sensor | 2 years (2 nonstandard batteries) | Requires HomeBase 2, 3, Mini, or Pro |
| eufy Security Motion Sensor | Passive Motion Sensor | 2 years (Lithium metal) | Requires eufy Security HomeBase |
The Models in Detail
eufy Security Entry Sensor 2 years Battery Life: One battery provides 800 days of monitoring
Check price on Amazon Our score: 8.8/10
Best for: Budget-conscious replacement sensor for legacy setups
Pros
- Two-year 800-day battery life
- Peel-and-stick or screw installation
- HomeBase siren integration
Cons
- Requires compatible HomeBase
- Indoor use only
Best for: Single door coverage for HomeBase owners
Pros
- Two-year battery life
- 100-decibel HomeBase siren trigger
- Compact door and window frame fit
Cons
- Requires separate HomeBase unit
- Single sensor per pack
The eufy Security Entry Sensor is a compact magnetic contact detector built specifically to monitor the status of swinging doors, sliding panels, and window frames. Powered by an included CR123A lithium battery, the unit provides continuous monitoring for up to 800 days, equating to over two years of runtime before maintenance is required. When a door or window pulls the contact away from the primary housing, the unit signals your centralized hub to deliver instant mobile notifications and can trigger an integrated 100-decibel siren on the HomeBase to deter unauthorized entry.
Installation is straightforward thanks to compact physical dimensions of 1.1 by 0.87 by 2.91 inches, allowing it to mount flush against standard door trim using the supplied mounting screws or adhesive backing. This sensor requires an existing eufy Security HomeBase to operate, making it an ideal choice for homeowners who already run proprietary security equipment and simply need to protect an additional rear patio or basement window. Shoppers seeking bulk coverage for an entire floor might prefer bundled configurations like a eufy door sensor 3 pack, but this single unit remains the standard choice for focused expansions.
The listing confirms compatibility with optional 24/7 professional monitoring services, enabling automated emergency dispatch for police, fire, or medical response when the alarm is tripped. With a 7.5-watt power profile and a durable white plastic shell, this contact detector handles everyday door vibrations without throwing false triggers. It serves as the baseline contact sensor in the catalog, giving way to multi-piece bundles when furnishing an entirely unequipped property.
eufy Security Entry Sensor One battery provides 800 days of monitoring
Check price on Amazon Our score: 8.0/10
Offered through the Amazon Renewed program, this version of the eufy Security Entry Sensor delivers identical perimeter tracking capabilities for users maintaining legacy hub hardware. The package includes the magnetic contact sensor, a fresh CR123A lithium-ion battery, mounting screws, and an owner manual, backed by inspection standards to ensure full operational reliability. It tracks access points using magnetic separation, sounding the 100-decibel HomeBase siren and delivering push alerts directly to your smartphone through the management app.
The listing specifies compatibility with original HomeBase, HomeBase E, and HomeBase 2 hardware, making it especially suited for older installations where replacing hubs is unnecessary. Physical dimensions measure 1.5 inches long by 1.1 inches wide by 0.87 inches high, providing a slightly different footprint that remains unobtrusive on painted window sills and door frames. Setup is achieved either by peeling the adhesive mounting tape or fastening the backplate with screws.
This unit is rated strictly for indoor use and requires pairing with a supported base station to transmit alerts over wireless frequencies. It is an ideal pick for shoppers replacing a damaged sensor or adding an isolated access point to an older home network without paying for brand-new retail packaging. Users starting completely from scratch will find more value in complete alarm packages rather than procuring standalone renewed components.
eufy Security 5-Piece Home Alarm Kit Install in minutes all by yourself
Check price on Amazon Our score: 9.8/10
Best for: Complete entry-level apartment security kits
Pros
- Includes keypad and motion sensor
- No monthly subscription fees
- Wireless 30-foot operating range
Cons
- Basic sensor capabilities
- Fixed hardware bundle
For homes without any preexisting security hardware, the eufy Security 5-Piece Home Alarm Kit provides a comprehensive starting framework inside a single box. The system includes two entry sensors for exterior doors or accessible windows, an interior motion sensor to detect movement within central living zones, and a physical wall-mounted keypad for rapid arming and disarming. All components communicate wirelessly with a 30-foot operational range, allowing users to secure an apartment or small home without running cabling through walls.
A central highlight of this package is the complete absence of recurring monthly fees, keeping all notification handling and alarm automation contained within your local system and smartphone app. The entry sensors install in minutes via adhesive mounts, while the motion detector and numeric keypad secure to flat walls using included brackets. The system provides instant alerts upon entry detection and integrates motion-triggered events directly within the smartphone control interface.
This starter bundle suits apartment dwellers, rental tenants, and first-time homeowners who want immediate perimeter and interior security without signing monitoring contracts. It eliminates the guesswork of matching individual accessories, providing physical keypad convenience at the front door. It eventually yields to advanced kits when higher-tier local video storage and longer-lasting sensor batteries become a priority.
eufy Security HomeBase3 S380 Hub+4-Pack Entry
Check price on Amazon Our score: 8.8/10
Best for: Whole-home multi-entry setups wanting expandable storage
Pros
- HomeBase 3 S380 hub included
- Five-year sensor battery life
- Bypass button on sensors
- Storage expandable up to 16 TB
Cons
- Hard drive sold separately
- Ships in separate packages
The eufy Security HomeBase3 S380 Hub+4-Pack Entry bundle combines four modern E20 entry sensors with the high-performance S380 centralized management hub. Each E20 contact sensor features an upgraded power architecture that delivers up to five years of continuous battery life, significantly outpacing previous hardware generations. The sensors feature dual-side magnetic detection for versatile placement on tricky window moldings, alongside a physical bypass button that allows occupants to open a window for fresh air without triggering the system.
The included HomeBase 3 hub forms the nerve center of the entire installation, boasting 16 GB of integrated storage expandable up to 16 TB with an external drive for unified camera recording. It leverages BionicMind artificial intelligence to achieve up to 99% facial recognition accuracy, actively filtering out false alerts from family members while securing private data using AES-256-GCM and ECC-256 encryption standards. When expanding an automated security system with outdoor perimeter coverage, pairing this hub alongside a eufy security camera solar panel creates a self-sustaining security perimeter that ties contact triggers to video feeds.
This kit is engineered for homeowners wanting maximum coverage across front, back, and side entrances alongside premium local storage capabilities. Instant chimes emanate from the hub whenever a door opens, and the unit can automatically trip connected lights, security cameras, or the built-in 100-decibel siren. It is the definitive multi-entry choice in the current catalog, packaged in separate retail boxes for modular deployment.
eufy Security Glass Break Sensor E10 Precise Detection with an Advanced Algorithm
Check price on Amazon Our score: 9.8/10
Best for: Ground-floor rooms with multiple glass windows
Pros
- Covers six glass surface types
- Up to 25-foot detection range
- Two-year battery life
Cons
- HomeBase firmware update required
- Nonstandard batteries required
Unlike traditional magnetic contacts that only trip when a frame swings open, the eufy Security Glass Break Sensor E10 uses acoustic intelligence to detect window shattering. Driven by an onboard neural processor and an AI algorithm trained specifically on acoustic breakage profiles, the E10 identifies structural glass failure while ignoring everyday household clatter. It monitors across six distinct residential glass categories, including plate, coated, laminated, tempered, wired, and dual-pane glass surfaces.
The sensor boasts an effective acoustic monitoring radius of up to 25 feet, allowing a single wall-mounted detector to safeguard an entire sunroom, living area, or sliding patio door array. It communicates with compatible base stations over an open-air range of up to 656 feet (200 meters), maintaining a dependable link through indoor partitions. Operating requirements mandate a compatible hub updated to specific firmware thresholds, including HomeBase Mini (version 4.0.8.6 or above), HomeBase 2 (version 3.4.2.2h or above), HomeBase 3 (version 3.8.3.4 or above), or HomeBase Pro (version 4.1.5.8 or above).
Designed for wall mounting via adhesive tape or screws, the E10 runs for approximately two years on two nonstandard batteries before replacement is necessary. This detector is essential for rooms featuring ground-floor sliding glass doors or large fixed picture windows where an intruder could breach the perimeter without separating a magnetic frame contact. It serves as an acoustic defense layer that works alongside traditional door sensors.
eufy Security Motion Sensor The included battery provides up to 2 years of power for round-the-clock
Check price on Amazon Our score: 9.4/10
Best for: Interior hallway and pet-friendly room coverage
Pros
- 100-degree wide field of view
- Adjustable sensitivity for pet immunity
- Two-year operating battery life
Cons
- Indoor only and not waterproof
- Requires separate HomeBase
The eufy Security Motion Sensor acts as a vital secondary defense line by monitoring movement across interior spaces if an exterior entry point is bypassed. Designed for corner or flat wall mounting, the unit covers a wide 100-degree field of view with an effective detection radius extending out to 30 feet. It is powered by an included lithium metal battery that delivers up to two years of continuous protection without frequent maintenance.
False alarm prevention is handled through adjustable sensitivity controls, allowing homeowners to calibrate detection thresholds so household pets like cats and dogs can roam freely without sounding the alarm. Whenever human motion triggers the hardware, it routes an immediate push notification to your mobile device via the companion application and integrates with optional 24/7 emergency dispatch services. Weighing just 2.4 ounces with dimensions of 0.79 by 1.97 by 3.15 inches, the sensor mounts easily along hallways, staircases, and main walkways.
The listing explicitly states that this motion sensor is not waterproof and must remain indoors away from moisture or external exposure. It relies on a paired HomeBase to communicate, making it a natural interior companion to exterior door and window contacts. Homeowners looking to secure central gathering areas or entry foyers can use this detector to catch unauthorized movement that escapes perimeter contact sensors.
Matching a Model to Your Setup
- For protecting a single patio door or secondary entrance when you already own a base hub, the eufy Security Entry Sensor delivers a simple contact solution with two years of battery life.
- For legacy systems running an original HomeBase, HomeBase E, or HomeBase 2, the renewed eufy Security Entry Sensor offers a cost-conscious way to replace or add individual access monitors.
- For small apartments or rental properties needing an all-in-one starter package, the eufy Security 5-Piece Home Alarm Kit includes entry contacts, a motion detector, and a keypad without monthly fees.
- For larger homes requiring whole-perimeter coverage with advanced AI filtering and massive local video storage, the eufy Security HomeBase3 S380 Hub+4-Pack Entry provides four long-lasting sensors and expandable hub architecture.
- For ground-level rooms containing sliding patio doors or wide picture windows, the eufy Security Glass Break Sensor E10 detects glass impacts across six material types up to 25 feet away.
- For interior hallways and common living areas where household pets roam, the eufy Security Motion Sensor backs up your perimeter hardware with customizable sensitivity and a 100-degree field of view.
Before You Buy
Before finalizing your hardware selection, examine the hub prerequisites detailed in the manufacturer listings. Standalone magnetic contacts like the entry sensors, the motion detector, and the acoustic glass sensor cannot connect directly to your home Wi-Fi router on their own. They require an active, paired HomeBase to handle communication, chime alerts, and mobile notifications. Furthermore, the acoustic glass break sensor requires specific firmware thresholds on HomeBase 2, HomeBase 3, HomeBase Mini, or HomeBase Pro units, meaning older hubs must be checked and updated through the mobile application prior to mounting the hardware.
Battery specifications and included hardware also vary across the catalog. The standard entry sensors utilize CR123A lithium cells, while the motion detector uses a lithium metal cell and the glass break sensor requires two nonstandard batteries. While the HomeBase S380 hub kit advertises local storage expansion up to 16 TB, the external 2.5-inch portable hard drive is not included in the retail box and must be purchased separately. Keep in mind that multi-item bundles, such as the HomeBase 3 bundle with four entry sensors, frequently ship in separate retail packaging and may arrive on different delivery dates.
FAQ
Can a eufy security door sensor work without a HomeBase?
No, standalone eufy door sensors cannot function as independent Wi-Fi devices. They rely on proprietary wireless protocols to communicate directly with a compatible eufy HomeBase, which processes sensor triggers, sounds the 100-decibel local alarm, and sends push notifications to your smartphone.
What is the difference between an entry sensor and a glass break sensor?
An entry sensor is a two-piece magnetic contact that triggers when a door or window frame physically opens. A glass break sensor is an acoustic detector that monitors a 25-foot radius using an AI algorithm to identify the specific sound frequency of breaking glass, even if the window frame remains closed.
How long do the batteries last on eufy door sensors?
Battery longevity depends on the sensor hardware generation. Standard eufy entry sensors powered by CR123A batteries are rated for up to two years, or roughly 800 days of continuous operation. Newer E20 entry sensors bundled with the HomeBase 3 system feature an extended battery lifespan rated for up to five years.
Can household pets trigger the eufy motion sensor?
The eufy motion sensor includes adjustable sensitivity settings specifically engineered to distinguish pets from human intruders. By adjusting the sensitivity level within the mobile application, you can prevent dogs and cats from accidentally setting off false alarms while retaining human detection across a 30-foot range.
Can I temporarily open a window without sounding the alarm?
The newer E20 sensors included in the HomeBase 3 hub package feature a physical bypass button directly on the sensor body. Pressing this button temporarily deactivates the specific contact sensor, allowing you to open a window for ventilation without disarming the entire home security system.