10 Best Amazon Prime Big Deal Days Eufy Deals (October 2026 Sale)

Picking a security camera during a big sale usually comes down to one question: which one will you still be happy with in a year. The eufyCam E220 is the pick we would put in a dog’s room first, because its on-device AI separates people from pets, it pans a full 360 degrees and nothing about recording sits behind a monthly fee. Renters with a side door get similar value from the Smart Lock C220, and anyone covering a yard needs the SoloCam S340 or the SoloCam E42 Kit.

The fall sale runs October 6-7, 2026, and early-access offers for members are usually live before it opens. Offers move through the event, so treat every pick here as one worth watching and check the listing for what it is offering right now.

Our Top 3 Picks for Amazon Prime Big Deal Days Eufy Deals (October 2026)

First place goes to the eufyCam E220. It is the only camera in this list that most people describe as a pet camera first and a security camera second, and the review count behind it (21,493 at 4.4 stars) is far larger than anything else on the sheet.

Second is the SoloCam S340, which solves the problem most people actually have with a first outdoor camera: where the power cable goes. The removable solar panel and 8 GB of internal storage mean one unit in one afternoon with no hub and no wiring.

Third is the Video Doorbell E340, the pick for anyone whose real concern is the front step. The second downward-facing camera is the reason it earns the slot, because packages on a mat are the thing most doorbells miss.

Amazon Prime Big Deal Days Eufy Deals Compared

Ten products, ten different jobs. Eight are cameras you mount and look through, two are locks and one is a doorbell, and the gaps between them are what usually trips people up: no Wi-Fi, an existing base, or a yard that needs four bodies pointed at it.

How We Chose

We compared resolution, field of view, power method, local storage capacity, weather rating, installation requirements and ecosystem lock-in, then read what owners actually report about each one. Ratings and review counts on Amazon were checked on October 2026. Products whose real-world weaknesses showed up repeatedly across reviews were kept but flagged rather than quietly dropped.

1. eufyCam E220: Editor’s Choice for Indoor Pet Watching

Verdict: the camera most dog owners in this list should watch during the sale. It is small, it screws into a shelf or a windowsill, and it is the simplest way in this roundup to get a view of a crate, a playpen or a sleeping dog while you are at work.

What stands out is the processing happening on the camera itself rather than in the cloud. The AI runs locally and sorts a human from a pet, which means a dog trotting past the lens does not fill your phone with alerts. Two-way audio turns the unit into an intercom, which is the part people end up using most when a new puppy whines after dark.

For a dog-owner scenario: a camera on a bookshelf at 5 feet, angled at a bed in a bedroom, recording to a 128 GB card. The 360-degree pan means a dog sleeping in the corner is never off-frame, and the digital zoom reaches 8X for checking whether that lump on the floor is a slipper. The body is 2.97 by 2.97 by 4.21 inches and weighs 10.56 ounces, so it disappears on a shelf.

What owners report back:

• Effective resolution of 1440 pixels, with 3 MP capture and 8X digital zoom
• 360-degree field of view with automatic tracking when something moves
• Color night vision rather than washed-out infrared
• Motion-only alert type, so a dark room does not generate constant pings
• Corded electric power, which is a fair trade for never touching a battery

The eufyCam E30 is the alternative here, recording at 4K rather than 2K and reaching 1440 effective pixels. Its built-in spotlight and higher resolution win if you want to identify something at a distance, while the E220 wins on size and on how many owners have run it. If your dogs are small and the room is bright, that trade usually goes the E220’s way.

Two details catch people out. The listing mentions 256 GB card support, and owners report the camera accepting cards up to 128 GB. It also works on 2.4 GHz networks only, so a mesh node in a dead corner of the house is worth checking before you commit.

2. SoloCam S340: Best Value for Solar Backyard Coverage

Verdict: the best single outdoor camera to start with. No hub, no wiring, no monthly fee and one screw into a wall, which is a rare combination in a category where most outdoor cameras push you toward a base station.

The dual-lens setup is the reason this one earns its slot. One lens takes the wide view and the other handles the zoom, so you get 3K footage and 8X zoom out to roughly 400 ft without the digital mush you get from a single sensor. Owners who mounted it at the back of a garden say the range is genuinely useful for watching a dog line at a fence rather than assuming the fence held.

Owners highlight a few things the spec sheet does not say out loud:

• 8 GB of built-in storage, so playback works without a hub or a card
• A 10000 mAh battery, which matters more than it sounds in shaded yards
• A removable solar panel that mounts separately from the camera
• AI detection and color night vision rather than black and white infrared
• Quick wire-free installation, roughly seven minutes for most people

Skip it if: your only outdoor spot is under deep shade or heavy tree cover. Solar output and battery life in this model depend heavily on how much direct sun the panel actually sees, and that is the single most common complaint among the one-star reviews.

Compared with the SoloCam E42 Kit, the S340 gives you one 3K camera with no base station while the E42 Kit gives you four 4K cameras and a HomeBase 3. If you are covering a single driveway, a side gate or a dog run, one well-placed S340 beats four cameras you cannot place properly.

Roughly 12% of reviews are one star, and they cluster around setup friction and dropped connections rather than picture quality. A 4.2 average across 6,973 reviews is solid but not flawless, so read the negatives before you assume it will be perfect.

3. Video Doorbell E340: Best for the Front Door

The package camera is the whole point of this model. Most doorbells look outward and miss anything on the mat, and this one points a second lens down at the doorstep. For anyone who has lost a small number of deliveries, that second view is worth more than a higher headline resolution.

Owners also like the dual-light setup, which gives color night vision out to about 16 ft instead of the usual grey wash. It works on the quick-release rechargeable battery or hardwired to a 16-24V source, and it will ring your existing mechanical chime or pair with a HomeBase 2 or 3, the eufy Minibase Chime, Alexa and Google Assistant.

Points worth knowing before you buy:

• 160-degree viewing angle, which is narrower than some competing doorbells
• AI package detection that separates a delivery from a pickup
• IP65 weather rating and 2 IR LEDs for the dark side of the porch
• 1.1 pounds and 5.91 by 2.03 by 1.11 inches on the wall
• Plugs into an outlet, so no battery swap if you hardwire it

The Smart Lock C220 is the companion piece rather than the rival here. The E340 watches the door and the C220 opens it, and many owners end up wanting both, since a doorbell that cannot tell you who is standing there in the rain is only half the job. The E330 is the version for people who want one device doing both, at a higher tier of hardware.

The 4.0 average here is the lowest of the ten in this roundup. The complaints are consistent: slower-than-advertised battery life and notification delay that occasionally misses a live event.

Mounting matters as much as the hardware here: the unit can throw overheating warnings in direct sun, so put it under a porch roof or a small awning.

4. Smart Lock C220: Best for Renters and Side Doors

No drilling, no electrician, no landlord conversation. If you rent, this is the pick in the roundup. It fits over an existing deadbolt in about fifteen minutes, which makes it reversible enough that getting the deposit back is not a problem.

Built-in Wi-Fi is the detail that separates it from most keypad locks at this level. There is no separate bridge to mount near the router, so remote unlock and remote access logs work straight from the phone. Combined with the six entry methods, that means a dog walker can have their own code without anyone handing over a physical key.

What the specs and owners agree on:

• BHMA Grade 3 certification after 100,000 lock cycles
• Up to 8 months of battery life on eight AA batteries
• IP53 waterproof, rated from -30C to 70C
• Aluminium body at 7.67 by 4.49 by 4.41 inches
• Two physical keys, eight AA batteries and the mounting hardware in the box

One install detail catches people out. Bores under 54 mm need the included spacer removed before the lock will seat, and that is the single most common problem in the reviews.

The Video Smart Lock E330 is the heavier alternative. The C220 is the simpler door: it will not show you the visitor, it will only let them in, and it runs on disposable batteries rather than a rechargeable pack. That simplicity is the point: the C220 sits at 4.3 stars across 4,248 reviews, and the complaints are about AA upkeep and occasional fingerprint misreads, not about the lock failing.

5. eufyCam E30: Best for Sharper Indoor Detail

Choose this one when you need to know which dog, not just that something moved. The 4K sensor holds detail when you zoom in on a clip, which is the difference between a notification and an answer when two dogs share a room.

The AI list is unusually broad for an indoor camera: humans, pets, audio cues and crying sounds, all with auto tracking. A camera aimed at a crate therefore responds to a whimper as well as to movement, and the roughly five seconds of pre-event recording means you are not watching a clip that starts after the interesting part.

Owners point out a few practical things:

• Local microSD storage up to 128 GB with no monthly subscription
• 360-degree pan and tilt with a Quick Focus Tap and panoramic view
• Built-in spotlight toggling between color and infrared night vision
• H.265 encoding, which keeps 4K clips manageable on a card
• Quiet motor rotation and a setup most people finish in five minutes

Sustained 4K recording wants a high-endurance card rather than the first one you find in a drawer. In HomeKit mode the output drops to 1080P, so if you run HomeKit and want the 4K, keep the camera on the eufy app.

Set against the eufyCam E220, this is the better indoor camera on paper and the weaker value in practice. The E220 has more than eight times the review count at the same 4.4 rating, so the community history behind it is far deeper. Pick the E30 if resolution and detection breadth matter more to you than the gap between the two.

6. SoloCam E42 Kit: Best for Whole-Home 4K

Four 4K cameras, four solar panels and a HomeBase 3 in one box. This is the kit for someone who has decided to cover the whole property at once rather than add a camera every season, and it is the biggest single outlay in the roundup.

Two things make it different from a plain four-camera bundle. License plate recognition reaches about 33 ft, so a camera on a driveway can actually read a plate rather than guess at a color, and the HomeBase 3 keeps recording during a network outage, which matters if your internet drops when a storm rolls through.

Specs worth weighing before the sale:

• HomeBase 3 with 16 GB built-in storage, expandable to 16 TB
• SolarPlus 2.0 panels needing roughly two hours of direct sun a day
• Motion-activated strobe light and siren for deterrence
• AI tracking of people, vehicles and events, plus facial recognition
• Up to 128 GB of microSD per camera, not included

Skip it if: you are starting from one camera. The SoloCam S340 covers a single point with no base station and a far smaller outlay, and adding to it later is straightforward. Buy the kit when the coverage plan is already written.

Good to know: the HomeBase 3 takes a 2.5 inch drive, not the 3.5 inch one most people already own. It also wants recent firmware, and owners report that live streaming to a screen all day drains the solar batteries much faster than motion-only use, which quietly changes the panel sizing math.

7. Video Smart Lock E330: Best for Seeing Who Is at the Door

A doorbell camera and a fingerprint lock, in one aluminium body. If the thing you want to know is who is at the door and whether to open it, this answers both questions without asking you to install two devices and hope they look good together.

The f/1.6 lens on a 2K sensor does well in the conditions a front door actually sees, which is low light and side lighting. The 10,000 mAh rechargeable pack is the other reason owners defend it: a door that gets opened twenty times a day drains a small pack fast, and this one is sized for that.

Numbers that matter:

• 8 GB built-in storage, so past video is available without a subscription
• BHMA Grade 3 certification and IP65 weather resistance
• 8.7 by 7.08 by 3.13 inches, in silver
• Entry via fingerprint, app, keypad, physical key, Alexa or Google Assistant
• Expands with eufy Chime, Chime 2 and HomeBase 3, sold separately

The Video Doorbell E340 is the alternative on this door. The E330 pairs a stronger after-dark lens with the entry hardware a lock gives you, and it edges the E340 on rating at 4.1 stars against 4.0. The E340’s advantage is that its package view solves a specific problem the E330 does not try to solve.

Skip it if: your door gets opened constantly. Owners running a busy entry point keep a spare battery, because a full recharge takes roughly four hours. Across the 1,233 reviews here, the most repeated complaint is the fingerprint pad failing on repeated attempts.

8. 4G LTE Cam S330: Best for Coverage With No Wi-Fi

A shed, a gate at the end of a long driveway, a rental you do not want to put on someone else’s Wi-Fi. That is what this camera is for, and nothing else in the roundup handles those spots.

The duo-mode design is the part people care about. The camera runs on your normal Wi-Fi when it can and falls back to 4G LTE when the signal drops, with a SIM card included that works across the major carriers. A 9,400 mAh battery and an upgraded solar panel mean the same install works where there is no power outlet at all.

Other details:

• 4K color video by day and night, 30 frames per second
• 100-lumen spotlight carrying color detail out to about 26 ft
• License plate identification at roughly 30 ft
• 32 GB SD card in the box, so local recording is not a later purchase
• 360-degree pan and tilt with AI tracking of people and vehicles

Good to know: the only recurring cost in this entire roundup sits here. The camera itself carries no monthly fee, but cellular data is a plan you pay for separately, and a 4K camera on a cellular link will use a noticeable amount of it. The IP55 rating is also lower than the IP65 on the other outdoor models here, which matters in driving rain.

Where the SoloCam S330 wins is a spot with no network, and everywhere else it gives ground. The S340 has a wider review history at 6,973 reviews, no data plan and a dual-lens 3K sensor. If you have Wi-Fi reaching the spot, there is no reason to pay for cellular.

9. eufyCam S330 Add-On: Best for Expanding a System

This one only makes sense if you already run an eufyCam 3 system, and that is genuinely the case for a lot of people upgrading one corner of a property rather than the whole thing. The add-on drops onto the base you have, keeps the same app, and records to 16 GB on the camera itself.

The Starlight sensor is the reason to choose this model over an older bullet camera. It holds color at night rather than switching to grey infrared, and owners watching a dog in a kennel or a run at the side of the house say the difference is obvious once you have seen it. Facial recognition is self-learning, so it improves once you label a few faces.

On the hardware side:

• Metal bullet body at 5.12 by 2.56 by 2.56 inches and 14.08 ounces
• IP65 weather resistance for year-round outdoor mounting
• Two-way audio plus Alexa and Google Assistant voice control
• Activity zones to cut down on false alerts from a busy street
• Storage expandable to 16 TB with a portable hard drive

Skip it if: you are starting fresh. This is an add-on, not a starter, and owners who bought one without a base had nothing to plug it into. Starting over, the SoloCam S340 or the C37 Kit both arrive as complete systems.

Good to know: at 960 reviews this is one of the thinner histories on the list, and a facial recognition feature that depends on lighting and training is worth testing on your own front door before you rely on it. The 4.3 rating is solid, but the sample is small.

10. eufyCam C37 Kit: Best for Large Yards

Four 2K pan-and-tilt cameras that follow what they see. If your problem is a dog running the length of a property and out of frame, auto tracking that re-centers the subject is the feature you are actually paying for.

The HomeBase Mini is smaller than a full base station and still holds 64 GB, expandable to 1 TB through microSD, and it handles up to ten cameras with person, vehicle, pet and facial recognition plus cross-camera tracking. Each camera gets its own detachable 3W solar panel, so the panels can be positioned for sun rather than each camera being stuck where the mount landed.

Points to weigh:

• 2K color night vision with a built-in spotlight, 77% more pixels than 1080p
• 15 frames per second, which is fine for people and vehicles but not for fast action
• 2.4 GHz only, on 802.11 b/g/n
• Twelve-month manufacturer warranty
• Needs eufy App v6.0.10 or later and a current HomeBase Mini firmware

Good to know: this kit is not compatible with HomeBase 2 and not with HomeKit, and it is 2.4 GHz only. If your existing eufy setup runs on either of those, this is the wrong box. Detection accuracy is also imperfect, and the cameras take a few seconds to wake from idle, so brief events can be missed.

The SoloCam E42 Kit is the other four-camera route. The C37 trades 4K for 2K but adds real auto tracking and a much larger built-in base at 64 GB. With 585 reviews this is the newest and thinnest-reviewed listing here, so read the reports of wake delay and missed detections before you commit to four of them.

How to Choose eufy Smart Home Devices During Prime Big Deal Days

Security Camera Features That Matter

Resolution is the least interesting number on the page. What decides whether a camera is useful is field of view, night performance and whether the thing you care about is inside the frame. A 2K camera with 360-degree pan and auto tracking beats a 4K fixed bullet pointed at the wrong patch of lawn every time.

For a dog household, look for pet detection that runs on the device rather than in a subscription, and check the wake time. A camera that takes several seconds to wake from idle will miss a dog sprinting through a doorway.

The picks that fit: the eufyCam E220 indoors, the SoloCam S340 for one outdoor point, the C37 Kit when you need tracking across a large yard.

Doorbell and Smart Lock Details That Matter

For a doorbell, the deciding question is what you want to see. If packages are the worry, a second downward camera matters more than resolution, which is why the E340 is on this list. If the visitor is the worry, a wider viewing angle and better after-dark performance matter more.

For a lock, check the bore size before anything else. Most no-drill locks fit standard deadbolts, and the ones that do not need a spacer removed or a different model entirely. Battery type matters too: eight AA cells mean a trip to the drawer twice a year, a 10,000 mAh rechargeable pack means a four-hour wait on the mat.

The picks that fit: the E340 for a front step, the C220 for a rental, the E330 when you want one device doing both jobs.

Local Storage and the Monthly Fee Question

Core recording on these devices does not require a paid plan. Every camera and lock in this roundup stores to built-in memory or a microSD card, and the HomeBase units in the two kits do the same on the network side. That is the single biggest reason to stay inside this brand rather than a competitor whose useful features sit behind a cloud tier.

Two caveats. Extra storage capacity varies a lot: 8 GB on the SoloCam S340 and the E340, 16 GB on the SoloCam E42 Kit, 64 GB on the C37 Kit, and up to 128 GB through microSD on the indoor cameras. And the 4G LTE Cam S330 avoids a subscription but not a cellular data bill, which is a cost that shows up every month instead of once.

Compatibility With Your Smart Home

Every camera here works over 2.4 GHz Wi-Fi, and several of them work on 2.4 GHz only. If you have a dual-band router, that is fine. If you have a mesh system that isolates 2.4 GHz onto a different node, check which one the camera will latch onto before you mount it.

Check the base and app version too. The eufyCam C37 Kit needs a recent app version and current HomeBase Mini firmware, will not work with HomeBase 2, and has no HomeKit support. The SoloCam E42 Kit asks for HomeBase 3 firmware V3.6.9.0 or later. Neither fact is obvious from a product photo.

The Smart Lock C220 works inside the eufy ecosystem for routine and doorbell integration, so mixing a lock with a non-eufy doorbell narrows what you can do.

New Models, Bundles and Variant Numbers

eufy reuses model numbers, which is how two different cameras end up looking identical on a deal page. The eufyCam S330 is the same hardware as the eufyCam 3, the model numbers in the spec block (T8410X, T81703W1, T8506 and the rest) are the surest way to confirm you are looking at the same unit, and the S330 Add-On is genuinely an add-on that needs an existing base.

Bundle contents drive the real value of any offer here. Ask three questions before you compare two listings: is a base station or HomeBase included, is a microSD card in the box, and is the solar panel part of the kit or a separate purchase. The E42 Kit includes a HomeBase 3 with 16 GB; the C37 Kit includes a HomeBase Mini with 64 GB; the 4G LTE Cam S330 includes a 32 GB card.

How to Shop eufy Smart Home Deals During the Sale

On a listing like these, read what is in the box before you read the deal. A kit with a base and a card in it is worth comparing against a bundle of loose cameras. Then check the model number in the specifications against the listing title, since S330, eufyCam 3, S340 and C37 get relabelled and re-listed often enough that two pages can look like the same product and be different hardware.

Look at who the seller is and whether the unit is fulfilled by Amazon or by a third-party seller, and treat renewed units separately from new ones. Most offers during the event need a Prime membership, with a free trial qualifying you, and they change through the window, so the listing is the only reliable reference.

Before you check out:

• Match the model number in the specs against the title before comparing two pages
• Confirm whether a HomeBase, microSD card or solar panel is in the box
• Check the Wi-Fi band the device needs, since several run on 2.4 GHz only
• Confirm the base unit and app version the cameras require
• Decide between a starter camera and a full kit before browsing bundles
• Read the return window and warranty terms on the exact listing you are buying

Frequently Asked Questions

Final Verdict: Amazon Prime Big Deal Days Eufy Deals

Buy the eufyCam E220 if you want one camera that does the most useful job in a dog household, and accept 2K over 4K in exchange for the deepest review history on this list. It is the first choice here for a reason, and the badge on the box above says the same thing.

Watch the SoloCam S340 if you are covering a yard, a gate or a side path and want to avoid wiring. The Video Doorbell E340 is the front-step answer, the Smart Lock C220 is the renter’s answer, and the eufyCam E30 is there when you need 4K detail on a dog indoors rather than a cheaper camera.

For bigger plans: the SoloCam E42 Kit covers a whole property in 4K with a HomeBase 3 included, the eufyCam C37 Kit adds auto tracking across a large yard, the Video Smart Lock E330 puts a camera and a fingerprint reader on one door, and the 4G LTE Cam S330 is the answer where no Wi-Fi reaches.

Whichever one you land on, read the model number and the bundle contents before you compare two pages, then check the listing on the day of the sale for what it is actually offering.