eufy Security Motion Sensor

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79%
21%
88%
Detection Accuracy
91%
Battery Life
84%
App Performance
73%
Value for Money
87%
Ease of Installation
52%
Pet Sensitivity
86%
Notification Speed
78%
Detection Range
67%
Ecosystem Integration
82%
Build Quality
58%
False Alert Rate
83%
Coverage Angle
93%
Subscription Model
More

Overview

The eufy Security Motion Sensor is a compact, wall-mounted add-on designed for homeowners who are already invested in the eufy HomeBase ecosystem — it is not a standalone alarm system. Worth clarifying early: this alarm add-on is strictly for indoor use, so don't buy it expecting to guard a porch or garage entrance. It's a small, unobtrusive white unit that tucks neatly into a corner without drawing attention. eufy has carved out a solid reputation in the budget-to-mid-range smart home space, and this sensor fits that profile — capable and reasonably priced, with no mandatory subscription required for basic app alerts.

Features & Benefits

The eufy sensor covers a 100-degree field of view and detects motion up to 30 feet away — enough to handle most living rooms, hallways, or staircase landings without needing a second unit. The adjustable sensitivity setting is a nice touch: it lets you dial down the trigger threshold to reduce false alerts from smaller pets, though don't expect it to fully ignore a 60-pound dog. Battery life, under typical conditions, can stretch close to the manufacturer's estimated two years — which genuinely cuts down on maintenance compared to sensors you're recharging every few months. And all of this works without a monthly fee, with real-time push alerts going straight to your phone through the eufy app. Professional emergency dispatch is available as an upgrade if you ever want it.

Best For

This motion sensor is a natural fit for anyone already running a eufy HomeBase setup who wants to extend coverage one room at a time. It's also a smart pick for renters — the wall-mount installation is simple enough that you're not drilling large holes or rerouting any wiring. If your household is pet-free or home to smaller animals, the sensor handles daily use without constant false trigger headaches. It's particularly well-suited for interior chokepoints like hallways, stairwells, and entryways where that wide detection angle really earns its keep. People who want app-based alerts without locking into a recurring fee will appreciate how much comes included at no ongoing cost.

User Feedback

Buyers consistently highlight this alarm add-on for reliable detection consistency and fast push notifications that land on your phone almost immediately after a trigger. Long battery endurance is another point that comes up often — many owners report going well over a year before needing a replacement. On the downside, pet owners with medium or large dogs tend to find that the sensitivity dial doesn't stretch far enough, and nuisance alerts remain a recurring complaint. The bigger frustration for some shoppers is that HomeBase is not included — if you don't already own one, the real cost of entry is considerably higher. A handful of reviewers also mentioned they didn't realize the sensor is indoor-only until after it arrived.

#Home Security Systems
#Security & Surveillance
#Electronics

Pros

  • No monthly subscription required for real-time app alerts — a genuine cost edge over many competing sensors.
  • The 100-degree detection angle covers wide room areas without needing a second unit installed nearby.
  • Battery life frequently stretches well beyond a year under normal use, reducing maintenance trips noticeably.
  • Lightweight and straightforward to wall-mount — no professional installation or extra tools needed.
  • Push notifications arrive fast, with many users reporting near-instant alerts after motion is detected.
  • Sensitivity adjustment gives smaller-pet households a practical way to cut down on unnecessary false alarms.
  • Works across the full eufy product lineup, making room-by-room expansion simple for existing users.
  • Optional 24/7 professional monitoring with emergency dispatch is available as an upgrade path if needs evolve.
  • Battery and mounting hardware ship included — no hidden add-ons required to get started.
  • Compact, discreet casing blends into most home interiors without drawing attention to itself.

Cons

  • HomeBase is sold separately — buyers without one face a significantly higher true cost of entry.
  • Pet sensitivity calibration falls short for medium and large dogs, leaving frequent false triggers unresolved.
  • Strictly limited to indoor use — no weather resistance for porches, garages, or any exterior location.
  • Fully locked into the eufy ecosystem and will not integrate with third-party hubs or smart home platforms.
  • The eufy Security Motion Sensor requires a smartphone and active app access, which may frustrate less tech-comfortable users.
  • The two-year battery estimate is manufacturer-rated under ideal conditions and may fall short in high-traffic environments.
  • Detection range tops out at 30 feet, which may leave gaps in larger or open-plan living spaces.
  • No built-in audible alarm on the sensor itself — alert delivery depends entirely on the app or HomeBase.
  • Only available in white, offering no flexibility for homes with darker walls or non-standard color schemes.
  • The indoor-only limitation is not prominently flagged at point of sale, catching a noticeable number of buyers off guard after purchase.

Ratings

The eufy Security Motion Sensor scores below were calculated by our AI analysis engine after processing thousands of verified global buyer reviews, with spam, bot submissions, and incentivized feedback actively identified and filtered out. What remains is a transparent breakdown of where this alarm add-on genuinely earns its reputation and where real buyers consistently run into friction. Strengths and pain points carry equal weight in every score, so the results reflect the full picture rather than a curated highlight reel.

Detection Accuracy
88%
Users consistently report that the sensor catches movement when it should, with very few missed triggers in standard indoor placements like living room corners or staircase landings. In day-to-day use, the detection feels dependable — the kind of reliability that makes you forget the sensor is even there.
A smaller subset of buyers report occasional missed triggers when subjects move slowly or tangentially across the detection zone rather than directly toward it. Detection consistency can also dip slightly in larger rooms where the 30-foot range is pushed close to its limit.
Battery Life
91%
Battery longevity is one of the most frequently praised aspects in verified buyer feedback — many users go 12 to 18 months without a replacement, and some approach the manufacturer's two-year estimate. For a sensor installed in a hard-to-reach stairwell or hallway corner, that kind of staying power makes a noticeable difference in day-to-day convenience.
The two-year figure is a best-case estimate, and real-world duration in high-traffic areas can fall noticeably short. Users who mount it in a busy main hallway that triggers dozens of times each day report needing to replace the battery well before hitting that benchmark.
App Performance
84%
The eufy Security app earns consistent praise for delivering fast, reliable push notifications with minimal lag after a motion event. Users appreciate the clean interface and the ability to review alert history and adjust sensitivity settings without digging through complicated menus.
Some users report occasional connectivity hiccups where notifications arrive delayed or not at all, usually tied to network conditions rather than the sensor itself. A smaller number of reviewers flag that periodic app updates have temporarily introduced bugs affecting alert delivery reliability.
Value for Money
73%
27%
At its price point, this alarm add-on delivers a competitive feature set — wide detection coverage, long-lasting battery, and subscription-free app alerts — that comparable sensors from premium brands would charge considerably more for. For buyers already inside the eufy ecosystem, the incremental cost per room is genuinely hard to argue with.
The value calculation shifts significantly if you don't already own a HomeBase, since that required hub represents a separate and meaningful additional expense. Buyers entering the eufy ecosystem from scratch will find the true total cost of entry considerably higher than the sensor's sticker price suggests.
Ease of Installation
87%
Installation is about as painless as it gets for a wall-mounted security device — hardware is included, the unit is light enough to mount without anchors in most surfaces, and the in-app pairing process typically takes only a few minutes. Renters particularly appreciate that removal leaves minimal wall damage behind.
The setup process assumes a configured HomeBase is already on the same network, which adds a prerequisite step that first-time eufy users must complete before the sensor does anything at all. A handful of reviewers found the initial Bluetooth pairing finicky, requiring a retry or two before connecting cleanly.
Pet Sensitivity
52%
48%
The adjustable sensitivity slider gives smaller-pet households a practical lever to reduce nuisance alerts from cats or small dogs wandering into the detection zone. Users with animals under roughly 20 pounds tend to report better outcomes after spending time calibrating the threshold through the app.
For medium and large dog owners, the sensitivity adjustment falls well short — even at the lowest setting, a bigger dog moving through the detection field will almost always trigger an alert. This is one of the most consistently cited frustrations across negative reviews and can make the sensor impractical for larger-pet households.
Notification Speed
86%
Alert delivery earns strong marks from buyers who depend on it — notifications typically arrive within seconds of motion being detected, which for a security device is exactly what you need. Users covering front hallways and entry points report the timing feels nearly real-time under normal home network conditions.
Notification speed depends on both the HomeBase connection and the phone's internet access, so delays can creep in during network congestion or when the receiving device has a weak signal. A subset of buyers also note that Do Not Disturb settings have inadvertently silenced alerts they fully expected to receive.
Detection Range
78%
22%
Thirty feet covers the overwhelming majority of standard residential rooms, hallways, and stairwells without pushing the sensor near the edge of its reliable operating zone. Users consistently confirm that it performs as specified in typical room sizes, without requiring an unusually high mounting position to achieve full coverage.
In larger open-plan living spaces or loft-style rooms, 30 feet can leave noticeable blind spots — particularly in diagonal coverage scenarios where the geometry works against the sensor. Some buyers expecting broader range were disappointed, though those use cases clearly fall outside the sensor's intended residential scope.
Ecosystem Integration
67%
33%
Within the eufy Security product family, the sensor slots in cleanly and works reliably alongside other eufy devices managed through the same HomeBase. Users who have expanded their eufy setups room by room find the integration consistent and well-supported through ongoing app updates.
The sensor is entirely locked to the eufy ecosystem, with no native support for Apple HomeKit, SmartThings, or other widely used smart home platforms. Buyers who want their security hardware to communicate with non-eufy devices will find this add-on a frustrating dead end.
Build Quality
82%
18%
The sensor feels more solid than its 2.4-ounce weight suggests, with a clean matte finish and no rattling or flex once mounted to the wall. Users rarely mention the hardware itself as a problem — it simply stays in place and does its job without demanding attention.
Being available in white only limits versatility on darker or non-standard walls, and a few buyers noted the casing picks up scuff marks more readily than expected in higher-contact mounting areas. The overall material quality is clearly budget-tier rather than premium, which is reflected in the price but still draws occasional criticism.
False Alert Rate
58%
42%
In pet-free households or those with very small animals, the false alert rate is genuinely low — users in these situations often report multiple days passing without a spurious notification. Thoughtful placement away from curtains, air vents, or windows also helps reduce environment-triggered false positives significantly.
Pet-owning households and rooms with active air sources — vents, fans, or drafty windows — tend to accumulate false alerts faster than the sensitivity settings can compensate for. This is a recurring theme in lower-rated reviews and undermines the sensor's practical reliability for a meaningful portion of buyers.
Coverage Angle
83%
The 100-degree detection arc is genuinely wide for a passive infrared sensor at this price, and users who mount it in a corner position can achieve near-complete coverage of smaller rooms with a single unit. Hallway and staircase placements benefit especially from this breadth, often eliminating the need for a second sensor entirely.
The angle is fixed, so buyers hoping to fine-tune the horizontal sweep beyond physically repositioning the unit have no software option to narrow or widen the cone. Users in irregularly shaped rooms or L-shaped corridors sometimes find a single sensor still leaves angles uncovered that require a second unit to address.
Subscription Model
93%
The absence of a mandatory subscription is one of the most consistently appreciated aspects of this alarm add-on — full push notification functionality works right out of the box at no ongoing cost. Buyers who have experienced recurring-fee fatigue from competing smart home platforms frequently cite this as a primary reason they chose the eufy ecosystem.
The optional professional monitoring tier does introduce a recurring charge for users who want emergency dispatch coverage, which can catch some buyers off guard if they sign up without fully reviewing the terms. Outside of that specific tier, verified buyers report no meaningful subscription-related complaints.

Suitable for:

The eufy Security Motion Sensor is an excellent choice for homeowners or renters who already own a eufy HomeBase and want to expand their indoor coverage one room at a time without the hassle of running cables or hiring an installer. The wall-mount setup is simple enough for anyone comfortable with a screwdriver, and because the battery comes included, you can have it up and running in minutes. It fits particularly well in high-traffic indoor zones — hallways, stairwells, and interior entry points — where its wide detection angle can cover an entire passage with a single unit. Pet-free households, or those with small and relatively calm animals, will get the most reliable experience without wrestling with false alert fatigue. If you want real-time app notifications without committing to a monthly monitoring fee, this alarm add-on delivers that core functionality cleanly and without ongoing costs.

Not suitable for:

The eufy Security Motion Sensor is a poor fit for anyone who does not already own a eufy HomeBase, since the hub is a mandatory separate purchase that adds meaningfully to the total cost of entry. Buyers hoping to secure outdoor spaces — a front porch, side entrance, or garage — should look elsewhere entirely, as this sensor has no weather resistance and will not survive exposure to the elements. Households with medium or large dogs are likely to find the sensitivity adjustment insufficient; the calibration range simply does not stretch far enough to consistently ignore a bigger, more active animal. If you are trying to build a brand-agnostic smart home setup or integrate a sensor into a non-eufy ecosystem, the hard platform dependency here makes that impossible. Finally, anyone expecting a self-contained alarm system should understand upfront that this add-on plays a supporting role — it cannot function at all without the HomeBase hub.

Specifications

  • Detection Angle: The sensor covers a 100-degree field of view, wide enough to monitor most standard rooms from a single corner or wall placement.
  • Detection Range: Motion is detected at distances up to 30 feet, making it adequate for average-sized living rooms, hallways, and stairwells.
  • Power Source: The unit runs on a single included lithium metal battery, requiring no wired connection or charging dock.
  • Battery Life: Manufacturer-estimated battery life is approximately 2 years under typical usage conditions, though actual performance will vary based on detection frequency.
  • Battery Type: Uses one lithium metal battery included in the box; no additional batteries or power adapters are required to begin use.
  • Connectivity: The sensor communicates exclusively through the eufy HomeBase hub, which must be purchased and configured separately before the sensor can operate.
  • Mounting Type: Designed for wall mounting with included hardware; the lightweight unit can be installed without professional assistance.
  • Item Weight: The sensor weighs 2.4 ounces, placing it among the lighter options available in this product category.
  • Dimensions: The unit measures 0.79″ deep by 1.97″ wide by 3.15″ tall, giving it a compact, low-profile footprint on any wall surface.
  • Color: Available in white only; no alternative color finishes are offered by the manufacturer.
  • Weather Rating: Rated for indoor use only — the sensor is not waterproof, weather-resistant, or suitable for any outdoor or semi-exposed placement.
  • App Support: Real-time push notifications are delivered through the eufy Security app, which is compatible with both iOS and Android devices.
  • Sensitivity: Motion sensitivity is user-adjustable via the app, allowing detection thresholds to be tuned to help reduce false alerts from smaller animals or low-level movement.
  • Monitoring: An optional 24/7 professional monitoring service is available as a paid add-on, providing emergency dispatch for police, fire, and medical response.
  • Compatibility: The sensor is compatible with the full range of eufy Security products and integrates within the broader eufy alarm ecosystem.
  • Subscription: Core app-based alert functionality requires no monthly subscription fee; professional monitoring is the only paid service tier available.

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FAQ

Yes — a eufy HomeBase hub is required and is sold separately. The sensor cannot function on its own; it pairs and communicates through the HomeBase, which also needs to be connected to your home network first. If you don't already own one, factor that into your total cost before purchasing.

No, this one is strictly for indoor use. It has no weather resistance whatsoever, so rain, humidity, or temperature swings would likely damage it. If you need to cover an exterior entry point, look for a dedicated outdoor-rated motion sensor or a weatherproof camera with motion detection instead.

The eufy Security Motion Sensor triggers a push notification through the eufy Security app on your smartphone. As long as your phone has an internet connection and app notifications are turned on, alerts typically come through within a few seconds of motion being picked up.

It's the manufacturer's estimate under typical conditions, so your actual mileage will vary. In a low-traffic spare room it's quite achievable, but in a busy hallway that triggers dozens of times a day, the battery will drain faster. Most users report at least a year of use, with many reaching close to two in quieter areas.

It depends a lot on your dog's size. The app lets you adjust detection sensitivity to help filter out movement from smaller animals, but medium and large dogs tend to trigger this alarm add-on regardless of how the setting is configured. If you have a bigger, active dog, expect false alerts to be an ongoing frustration rather than a solved problem.

No. Basic app alerts are included with no subscription required. The only paid tier is the optional 24/7 professional monitoring service, which adds emergency dispatch for police, fire, and medical response — but that is completely optional and not needed to receive app notifications.

The physical installation is simple — the unit is lightweight, comes with mounting hardware, and attaches to the wall with just a couple of screws. Pairing it to your HomeBase through the eufy app is guided and typically takes only a few minutes. Most people have it fully up and running in under 15 minutes.

Yes, you can pair multiple sensors to the same HomeBase and assign them to cover different areas of your home. Each one shows up independently in the app, so you can see which specific sensor triggered and customize settings per device. It's a practical way to build out coverage room by room over time.

The HomeBase handles local alarm functions, so the hub's siren can still activate even without an active internet connection. You just won't receive push notifications on your phone until connectivity is restored. For most users, the local alarm response is still enough to serve as a deterrent during brief outages.

It depends on which HomeBase model you own. Some eufy HomeBase versions support Alexa and Google Home integration, but Apple HomeKit compatibility has historically been limited or unavailable depending on the hub generation. Before assuming full integration with any smart home platform, cross-check your specific HomeBase model against eufy's current official compatibility documentation.