Instant Open Alerts
Opens 1.5 inches, you know: the two-piece magnetic design detects the gap the moment a door or window opens and pushes an alert straight to your phone via your HomeBase.
real-time
eufy Security Entry Sensor E10 | Manufacturer Renewed
Sale price
$34.00
Regular price $49.95
Skip to product information
eufy Security Entry Sensor E10 | Manufacturer Renewed
Sale price
$34.00
Regular price $49.95
🛡️ CamGuard Australia security doesn't have to be boring
🚪 Door & Window
♻️ Manufacturer Renewed
⚠️ HomeBase Required
Genuine eufy · Manufacturer Renewed
Entry Sensor
The tripwire that texts you.
A two-piece sentry for any door or window: the moment it opens 1.5 inches, you get an instant phone alert and your HomeBase can fire its 100-decibel siren. One CR123A battery keeps it on watch for around two years. Stick it on, forget it's there — until something opens.
⚠️ Requires a eufy HomeBase 2 (S280) or HomeBase 3 (S380) — not included in this listing. The sensor is an add-on: without a HomeBase it does nothing at all.
~2 yrs
Battery Life
1.5"
Ajar Trigger
100 dB
HomeBase Siren
Tape/Screw
Tool-Free Mount
Model: eufy Security Entry Sensor · MPN T8900 · Manufacturer Renewed
📲 Front door opened — alert sent
Opens 1.5" · you know instantly
Read this before anything else
This sensor needs a eufy HomeBase — it does nothing on its own
The Entry Sensor is an add-on for an existing eufy setup. It talks to your HomeBase; the HomeBase talks to your phone and sounds the siren. No HomeBase = no sensor. There is no HomeBase in this listing.
- HomeBase 2 (S280) — the classic eufyCam hub
- HomeBase 3 (S380) — the current-generation hub
Own a HomeBase Mini or HomeBase Pro instead? Message us your model before buying and we'll confirm compatibility — we'd rather check than guess.
The condition, honestly
Renewed · Tested
Manufacturer Renewed — here's exactly what that means
This sensor isn't brand new — it's been professionally renewed: restored, inspected and tested so it works like it should. The deal, plainly:
- Inspected, tested & fully working — checked before it ships.
- Minor cosmetic marks possible — light scuffs or marks from previous use. Cosmetic only; it's a sensor, not a show pony.
- Renewed (non-retail) packaging — protectively packed, no shiny retail box.
- CamGuard 12-month warranty — our in-house warranty (not a manufacturer warranty), plus your Australian Consumer Law rights.
Same genuine eufy hardware, meaningfully lower price. Doors don't care about scuff marks. 🤝
"A door can open quietly. It's much harder to open secretly."
Two little pieces, one unblinking watch on every door and window that matters.
What the sensor actually does 🚪
Simple job, done relentlessly
Triggers the Siren
100-decibel deterrent: pair it with your HomeBase security modes and an unexpected opening sets off the HomeBase siren — the whole street hears about it.
via HomeBase~2 Years Per Battery
One CR123A, 730 days of monitoring on eufy's rating. Change the battery about as often as you change your smoke-alarm ones.
CR123A · replaceableStick-On Install
Tape or screws, your pick: peel-and-stick mounting tape for a tool-free install, or use screws for a permanent hold. Sensor on the frame, magnet on the door, done.
tool-free optionDoors AND Windows
Compact two-piece design fits door frames, window frames, even cupboards and gates indoors — anywhere a gap opening means something's up.
indoor useJoins Your eufy System
Same app, same modes: it lives in the eufy Security app alongside your cameras and doorbell, and follows the security modes your HomeBase already runs.
eufy Security appThe honest bit 🤝
Six things we'd rather tell you now than read in a return request later.
⚠️
Useless without a HomeBase
This is an accessory to a system, not a system. It needs a HomeBase 2 (S280) or HomeBase 3 (S380) to function — none is included here.
♻️
It's renewed, not new
This unit has been used before and professionally renewed — inspected, tested, fully working, possibly with light cosmetic marks from its previous life.
📦
No retail box
Renewed stock ships in plain, non-retail packaging — protectively packed, nothing fancy.
🩹
Old tape has a memory
The peel-and-stick pads on a renewed unit may have seen life. Any double-sided mounting tape fixes that in seconds — or use the screw mounting instead.
🏠
Indoor use only
It's rated for indoor mounting — perfect on doors and windows from the inside; not built to weather the outside of a gate in the rain.
🛡️
Whose warranty it is
You're covered by our in-house CamGuard 12-month warranty — not a manufacturer warranty — alongside your Australian Consumer Law rights.
The spec sheet 🔧
Verified against eufy's own documentation
🏷️
Model
Entry Sensor · T8900
🏠
Requires
HomeBase 2 or 3
not included · sold separately
🚪
Trigger
Opens 1.5"
two-piece magnetic design
🔋
Battery
CR123A · ~2 yrs
730 days, eufy rating · replaceable
🚨
Siren
100 dB
sounds on the HomeBase
🩹
Mounting
Tape or screws
🏡
Placement
Indoor use
♻️
Condition
Manufacturer Renewed
inspected · tested · working
Will it work at your place? 🏠
One question decides it: which HomeBase do you own?
Works with
- HomeBase 2 (S280)
- HomeBase 3 (S380)
- The eufy Security app (alerts, modes & settings)
- Doors, windows, indoor gates & cupboards
Does NOT work
- On its own — no HomeBase, no function, full stop
- With non-eufy alarm or smart-home systems
- Outdoors in the weather — indoor rating only
💡 Own a HomeBase Mini or HomeBase Pro? Compatibility for those isn't confirmed for this sensor — message us your hub model before buying and we'll check it for you. Two minutes now beats a return later.
Straight talk on fit 🎯
Save yourself a return — check both columns
Probably not for you if…
- You don't own a eufy HomeBase 2 or 3 — this is an add-on, and there's no hub in the box.
- You want to monitor an outdoor gate in the weather — it's indoor-rated.
- You're after a mint boxed unit — this one's renewed, with honest wear possible.
Perfect for you if…
- You already run a eufy HomeBase and want to know about every door and window, not just the ones with cameras.
- You want cheap, reliable perimeter coverage — sensors on every entry point costs less than one extra camera.
- You're happy trading a scuff mark or two for a proper renewed-price discount.
Up and running in four steps 🚀
Honestly, the kettle takes longer
1
Pair it
In the eufy Security app, Add Device and follow the prompts — the sensor links to your HomeBase 2 or 3.
2
Mount the pair
Sensor on the frame, magnet on the door or window — aligned, within about 1.5 cm of each other when closed.
3
Set your modes
Choose what happens in Home and Away modes — silent phone alert, HomeBase siren, or both.
4
Test the door
Open it 1.5 inches. Phone buzzes. Grin. That door now reports to you.
What's in your package 📦
Renewed stock, plainly listed
📡
Entry Sensor Unit
Renewed · tested working
🧲
Magnetic Base
The second half of the pair
🔩
Mounting Screws
Tape mounting also works
📦 Packaging note
Renewed (non-retail) packaging: this genuine eufy sensor has been professionally renewed and tested, and ships in plain protective packaging rather than a retail box. Carefully packed in Townsville for the trip to your door. Same genuine hardware, honest condition, better price. ♻️
Why shop with CamGuard? 🤔
Aussie-owned business that actually gives a damn
100% Genuine Stock
Authentic eufy hardware, professionally renewed and tested. No knock-offs, no counterfeits.
Fast Dispatch
Orders dispatched within 1 business day from Townsville, QLD.
Real Human Replies
Townsville-based, quick to respond — real Aussies who know the eufy ecosystem inside out.
Second Life, Less Waste
Renewed hardware keeps perfectly good gear out of landfill — and you pay less for it.
⚖️ Australian Consumer Law
- ✔ Statutory guarantees apply
- ✔ Products must be of acceptable quality
- ✔ Repair, replace, or refund rights
- ✔ Full legal protection
🛡️ 12-Month CamGuard Warranty
- ✦ Full replacement warranty
- ✦ Our in-house cover — not a manufacturer warranty
- ✦ Express replacement service
- ✦ Aussie-based support, no runaround
📦 Dispatched within 1 business day from Townsville, QLD — tracked delivery Australia-wide.
Quick questions 💬
The five things buyers actually ask
QDoes it work on its own, without a HomeBase?
No — and this is the one to get right before buying. The Entry Sensor talks to a eufy HomeBase 2 (S280) or HomeBase 3 (S380); the HomeBase sends your phone alerts and sounds the siren. Without one it does nothing at all, and no HomeBase is included in this listing. Own a HomeBase Mini or Pro? Message us first — we'll confirm compatibility for your exact hub.
QWhat does "Manufacturer Renewed" actually mean?
The unit has been professionally renewed: restored, inspected and tested to full working order. It was used before, so light cosmetic marks are possible, and it arrives in renewed (non-retail) packaging. It's covered by our CamGuard 12-month in-house warranty — not a manufacturer warranty — plus your Australian Consumer Law rights.
QHow does it actually detect an opening?
It's a two-piece magnetic contact: the sensor mounts on the frame, the magnet on the door or window, aligned and close together when closed. When they separate — a gap of about 1.5 inches — the sensor reports to your HomeBase instantly: phone alert, siren, or both, depending on your security mode.
QHow long does the battery last, and can I replace it?
eufy rates it at around 2 years (730 days) of monitoring from a single CR123A battery — a common lithium cell you can buy at any hardware or battery shop and swap yourself in seconds. Real-world life varies with how busy the door is.
QCan I use it on an outdoor gate?
It's rated for indoor use — doors and windows mounted from the inside are its home turf. An exposed outdoor gate in Queensland weather isn't a fair fight for it, and we'd rather tell you that now.
Brand
eufy Security (Anker Innovations)
Model
Entry Sensor
MPN
T8900
Type
Door / window contact sensor (HomeBase add-on)
Condition
Manufacturer Renewed — inspected, tested, working
Requires
eufy HomeBase 2 (S280) or HomeBase 3 (S380), sold separately
Battery
1× CR123A (replaceable) · ~2 years per eufy
Warranty
CamGuard 12-month in-house warranty + ACL rights
🚪
Every door reports for duty. Every window, too.
The eufy Entry Sensor — professionally renewed and tested. Instant open alerts, a 100 dB siren on your HomeBase, and two years on a battery you can buy at the servo.
♻️ Manufacturer Renewed 📲 Instant Alerts 🚨 100 dB Siren 🔋 ~2 Yr Battery ⚠️ HomeBase Required 🛡️ 12-Month CamGuard Warranty 🚚 Fast Dispatch