Express Post
One button per mode
Home, Away, Disarm and SOS each have their own dedicated button, so there is nothing to scroll through and less chance of pressing the wrong mode by accident.
eufy Key Fob E10 | Brand New
$39.00
Skip to product information
eufy Key Fob E10
Condition Brand New
$39.00
RRP, brand new: $39.99 checked 08.10.2026
Build around this sensor
See what works with it and what it needs, with one kit total.
Know before you buy
The quick decision check
- Condition
- Brand New
- Stock
- Available now
- Delivery · Australia Post
-
Express Post
FREE on $99+ orders
$12.95 below $99
Standard
$9.95 below $99
Order total after discounts.
Delivery estimates & policy
- System
- Alarm accessory - HomeBase required
- Recording mode
- Event alerts
- Power
- Battery
- Compatible hubs
- HomeBase 2, HomeBase 3, HomeBase Mini, HomeBase Professional S1
- What you need
- One compatible HomeBase required
Compatibility: Needs one compatible eufy HomeBase to operate: HomeBase Mini (firmware v4.0.5.2+), a HomeBase 2 released after 2021 (v3.4.1.2+), HomeBase 3 (v3.7.2.6+) or HomeBase Professional S1 (v4.1.4.3+). It does not work on its own and no hub is included.
AU or US HomeBase both pair fine. The “requires a US-version HomeBase” line on some eufy pages does not hold in practice.
What you need to install it
- Install type
- DIY
- You’ll need
- A compatible eufy HomeBase (not included)
- Tools
- None - keyring fob, nothing to mount
- Time
- Under 5 minutes once your HomeBase is set up (estimate)
Choose compatible extras Choose only what your setup needs
Use the regular Add to cart button for this product on its own. Check the setup requirements above and each extra's listing for included parts and firmware requirements.
This adds the product shown above and every selected extra in one step. Use the regular Add to cart button for the product on its own.
Choose your viewThe essentials or the full story. Switch any time.
CamGuard Australia
Townsville, QLDExpress included over $99.00
Key Fob E10 Brand new
Four buttons. One less reason to reach for your phone.
A small four-button remote that sends Home, Away, Disarm and SOS commands to a compatible eufy HomeBase alarm system. It runs on a replaceable coin-cell battery and does nothing useful until it is paired to a working HomeBase.
- Four dedicated buttons
- Home, Away, Disarm and SOS
- Sub-1G radio to the HomeBase
- Up to 200 m open area
- HomeBase required
Needed to use it. A compatible eufy HomeBase is required and sold separately. eufy's own Key Fob E10 product page names HomeBase Mini (firmware v4.0.5.2 or later), HomeBase 2 (v3.4.1.2 or later, released after 2021), HomeBase 3 (v3.7.2.6 or later) and HomeBase Professional (v4.1.4.3 or later).
4dedicated mode buttons
200 mopen-area radio range, eufy's figure
CR2032replaceable coin-cell battery
IP65dust and water rating, eufy's figure
Sub-1Gradio link to the HomeBase
4HomeBase families eufy names, with firmware floors
The 200 m radio figure is for open areas. The fob must remain within range of its paired HomeBase; walls and other obstacles can reduce that range.
What it does well.
Key Fob E10: the features that matter in everyday use.
Sub-1G radio, not Wi-Fi
The fob talks to the paired HomeBase directly over a Sub-1G radio link rather than your Wi-Fi network, with a published range of up to 200 m in open area.
Replaceable coin cell
A CR2032 battery, the same type used in many watches and remotes, powers the fob. There is no charging cable and no charging port to worry about.
Keychain or lanyard
eufy describes it as easy to attach to a keychain or wear on a lanyard, so it travels with the keys you already carry.
The honest details
Before you buy.
- It only sends commands. The fob does not add a camera, motion sensor or door contact of its own. What it can actually do depends entirely on the devices already paired to your HomeBase.
- The SOS button is a local alarm trigger, not a monitoring service. eufy describes SOS as sending a command to the paired HomeBase. It does not call emergency services and does not guarantee anyone responds.
- At home means within hub range. The IP65 rating does not extend the radio link. Use the fob within range of its paired HomeBase and within its 0–50 °C operating range.
- It alerts. It does not prevent. A key fob controls a configured alarm system. It is one part of home security, not the whole of it.
Specifications.
Published specifications for Key Fob E10 (T90K0), grouped for easy comparison. Only sourced details are included.
Controls and modes
- Modes
- Includes 4 modes: Home, Away, Disarm, and SOS, for arming and disarming
- Carrying
- Attaches to a keychain or can be worn with a lanyard
- Button hold duration
- Hold a button for 2 seconds to send its command, per eufy's user guide
Power and radio
- Battery
- CR2032 coin-cell battery
- Radio range
- Up to 656 ft / 200 m in open area
- Weather rating
- IP65-rated dust and waterproof design, per eufy's own product page
- Location of use
- eufy's own FAQ states it can only be used at home, connected to the HomeBase
- Dimensions and weight
- 62.1 x 34 x 11 mm per eufy's user guide; weight not published
- Operating temperature
- 0–50 °C
Installation and general
- Model
- T90K0121
Make sure it fits your setup.
The short version: this is a control accessory. It sends mode commands to a compatible eufy HomeBase and has no useful function without one.
Works with
- HomeBase Mini, from firmware v4.0.5.2. Named on eufy's own Key Fob E10 product page.
- HomeBase 2 (also called S280), from firmware v3.4.1.2, released after 2021. Named on the same eufy product page.
- HomeBase 3 (also called S380), from firmware v3.7.2.6. Named on the same eufy product page.
- HomeBase Professional (Pro), from firmware v4.1.4.3. Named on the same eufy product page.
Does not work with
- Standalone operation. eufy's own FAQ says the fob needs to stay connected to a HomeBase and has no useful function on its own.
- Direct phone pairing. The fob talks to the HomeBase over its own Sub-1G radio link, not to a phone or the eufy Security app directly.
- Emergency-service dispatch. eufy's page describes the SOS button as sending a command to the paired HomeBase. It does not describe any link to police, ambulance, fire services or a monitoring centre.
Check before buying
- Check the operating location. eufy rates the fob IP65 and specifies 0–50 °C. Its at-home limitation means it needs a working radio link to the paired HomeBase.
Brand New, explained.
What the condition label on this listing actually means.
What Brand New means
Factory-sealed stock in its full original retail packaging. Unopened, unused, in its sealed retail carton.
Who did the work
Nobody has: the seal is intact. We describe the packaging and the published spec sheet only, and we do not open units to check them.
How it arrives
Sealed retail carton, the standard retail accessories, and our own 12-month warranty on top of your consumer rights.
Right for you if
- You already have, or are buying, a compatible eufy HomeBase and want a simple physical remote for Home, Away, Disarm and SOS.
- You want mode switching without reaching for the app every time.
- Your HomeBase is a Mini, HomeBase 2, HomeBase 3 or Professional S1 on current firmware.
Probably not for you if
- You do not have a compatible eufy HomeBase and are not buying one.
- You want a device that adds camera or motion detection on its own.
- You expect the SOS button to reach emergency services directly.
Plan your setup.
What you need
Before you bring it home
This is a local remote for a compatible eufy HomeBase, not a phone-independent internet controller. Check the hub model and minimum firmware, fit the specified CR2032 battery and pair it in the app. Hold a mode button for two seconds to send its command while within radio range.
- Set up the HomeBase first. Confirm your compatible HomeBase is working in the eufy Security app and update it to the latest available firmware before adding the fob.
- Open the eufy Security app. Select the HomeBase, tap the add-device control and choose Key Fob from the device family list.
- Pair it nearby. Keep the fob close to the HomeBase and follow the pairing prompts shown in the app.
- Test every mode. From the places you actually enter and leave, press each button and confirm the HomeBase responds the way you expect before relying on it.
Included with your order
Supplied items
- 1 × eufy Key Fob E10, brand new, factory sealed
- Installed CR2032 battery
- Quick Start Guide
- Original sealed retail carton
Not included
- HomeBase: not included; a compatible HomeBase is required and sold separately
- Lanyard: eufy describes wearing it on one, but does not list one as included
- Camera, motion sensor or entry sensor: none included, these are separate system components
Questions people ask.
Does this fob work without a HomeBase?
No. eufy's own FAQ says the fob needs to stay connected to a HomeBase, and the product page lists only paired HomeBase models. It has no useful standalone function.
Does the SOS button call for help?
No. eufy describes SOS as sending a command to the paired HomeBase. It is a local alarm trigger, not a monitored emergency service.
Can I use it away from home?
It needs to stay within radio range of its paired HomeBase. The IP65 rating describes dust and water resistance; it does not give the fob a mobile internet connection.
When will it ship, and what does delivery cost?
We do our best to get orders out the same day. Same-day to 1 business day is our typical dispatch time from Townsville. During busy periods it can extend, though that is rare. Australia Post Express is included on every order over $99.00. Under $99.00 it is $9.95 tracked or $12.95 Express.
Who covers the warranty?
We do. CamGuard Australia is an independent importer and reseller, and this product carries our own 12-month warranty. It is not a manufacturer warranty. Your rights under Australian Consumer Law apply on top. Faulty or not as described inside that year and we cover the return postage.
Can I return it if I change my mind?
Yes, within 30 days of delivery if it is complete and unused. You pay the return postage and the original shipping is not refunded. Faulty or not-as-described returns are always free.
Independent importerWe buy genuine eufy stock and sell it under our own name. Not an official eufy dealer.
Our own 12-month warrantyHonoured by us in Townsville, not by the manufacturer. Faulty inside a year and we pay the return postage.
Express as standardAustralia Post Express included on every order over $99.00, from Townsville, Queensland.
Condition stated up frontThe grade on this listing is spelled out above so nothing about the unit is a surprise.
Key Fob E10, brand new.
A simple four-button control point for a compatible HomeBase system. Exactly as described above, our 12-month warranty. If that is the trade you want, this is the listing.
CamGuard Channel Four · Remote Control SpecialBrand New · E10 / T90K0121
Four-mode alarm controller · compatible HomeBase required
Four buttons for a compatible alarm system.
Home, Away, Disarm and SOS sit on the keyring already in your hand. Hold the chosen button for two seconds and the E10 sends its command to a compatible configured eufy HomeBase.
Four physical buttonsUp to 200m open areaCR2032Sub-1G RFHub required
CH 04 · KEYRING CONTROL
4
CamGuard Australia
Four-channel control
Four buttons. One compatible HomeBase.
Home, Away, Disarm and SOS send commands to a configured compatible HomeBase after a two-second press. The HomeBase is required and sold separately.
Broadcast interruption · mandatory system message
Needs a hub.
The E10 is a physical controller for an existing compatible eufy HomeBase alarm system. It does not pair directly to a phone, does not control standalone cameras, and has no useful standalone mode.
HomeBase Minipost-2021 HomeBase 2HomeBase 3HomeBase Professional S1subject to exact firmware
UP TO 200M OPEN AREA
Studio range test · no walls in the set
Open area is not three rooms and foil insulation.
The published range is up to 200 metres in open area. Walls, floors, metal, insulation, other radio equipment and the HomeBase position reduce it. Test the fob from the places you actually enter and leave, not from an imaginary empty paddock.
Battery drawer · user serviceable
A replaceable CR2032 coin cell.
- A replaceable CR2032 battery is installed in the sealed pack.
- Battery-life duration is not published for this exact fob, so this listing does not invent one.
- Replace with the same battery type and follow the current guide's polarity and disposal instructions.
- Keep coin cells away from children; ingestion can cause serious injury.
Programme guide · scope before convenience
What the remote controls, and what it does not.
It sends commands
Home, Away, Disarm and SOS are sent to the paired HomeBase after a two-second hold.
The hub responds
Any alarm sound, mode change or notification comes from the compatible configured system, not from a pocket siren inside the fob.
It is not a tracker
The E10 is not a location tag, Bluetooth finder, standalone alarm, phone remote or monitored-emergency device.
Teletext page 410 · specifications
The facts are on screen.
P410 KEY FOB E10SUBPAGE 1/1
Producteufy Key Fob E10
ModelT90K0121
ConditionBrand New, factory sealed
ControlsHome, Away, Disarm and SOS
ActionPress and hold selected button for two seconds
RadioSub-1G RF to compatible HomeBase
RangeUp to 200m in open area
BatteryUser-replaceable CR2032, installed
KeyringAttached / integral keyring hardware
HubCompatible HomeBase mandatory, sold separately
Hub routesMini, post-2021 HomeBase 2, HomeBase 3 or Professional S1, subject to firmware
Phone pairingNot a direct phone-pairing controller
Standalone useNot supported
Fob sirenNo; alarms come from configured compatible devices
MonitoringDoes not call emergency services
SubscriptionNo separate monthly plan required for the physical fob
Blister-pack reveal · exact inclusions
Everything in the sealed broadcast pack.
1 · E10 fob bodyThe genuine four-button T90K0121 controller.
2 · Four-button faceHome, Away, Disarm and SOS controls built into the fob.
3 · Integral keyringThe attached keyring hardware supplied with the fob.
4 · CR2032 batteryReplaceable coin cell installed in the fob.
5 · Quick Start GuidePrinted setup and safety information.
6 · Retail packagingFactory-sealed original retail carton and presentation.
Not included:
- Compatible HomeBase
- Separate lanyard
- Security camera or sensor
- Pocket siren
- Direct phone pairing
- Monitored emergency response
Wrong answer buzzer · choose something else if...
This is not your remote.
You have no compatible HomeBase.The E10 cannot work standalone.
You want direct phone pairing.This uses Sub-1G RF to the hub.
You need a pocket siren.The fob itself is silent.
You expect emergency dispatch.SOS sends a configured system command only.
You need guaranteed 200m indoors.The rating is open area and obstacles reduce it.
Studio countdown · pair before air
Four steps to the keyring.
Confirm the hubMatch the exact compatible HomeBase and update it to current available firmware.
Open the eufy appSelect the HomeBase and add the Key Fob E10 using the current in-app path.
Pair nearbyKeep the fob near the HomeBase and follow the button prompts shown in the app.
Test every modeFrom the actual entry points, hold each intended button for two seconds and confirm the configured response.
Brand New
Factory Sealed
Factory Sealed
Condition ident · first broadcast
Brand New means the Key Fob E10 is factory sealed in its full original retail packaging with the standard contents named above. It has not been opened, paired or used by CamGuard Australia.
Viewer information · facts after the break
Questions before ordering.
Can the fob work without a HomeBase?
No. The E10 is a physical controller for a compatible eufy HomeBase alarm system and has no useful standalone mode. It does not pair directly with a phone or a camera. Update the hub's firmware, then add the fob through that HomeBase in the eufy app.
Which HomeBases can it use?
The current listing names HomeBase Mini, post-2021 HomeBase 2, HomeBase 3 and HomeBase Professional S1 routes, subject to exact model, region and firmware. Update the base to current firmware before pairing.
Does the SOS button call emergency services?
No. Holding SOS for two seconds sends the configured command to the compatible HomeBase. The resulting alarm or account notification depends on your system setup. The fob is not a monitored-emergency device, does not place a phone call and cannot guarantee that another person will see or act on a notification.
Does the fob make an alarm sound?
No. The Key Fob E10 itself is not a pocket siren. It sends Home, Away, Disarm or SOS commands to the paired HomeBase. Any siren, mode tone or notification comes from the compatible devices and app behavior configured in that system, subject to connectivity, settings and firmware.
Will it work 200 metres through my house?
That cannot be promised. The published figure is up to 200 metres in open area. Walls, floors, metal, foil insulation, interference and HomeBase placement reduce practical range. Pair the fob, then test every real entry point and parking position before relying on it as your regular physical controller.
What battery does it use?
A user-replaceable CR2032 coin cell is installed. eufy does not publish a battery-life duration for this exact fob, so this listing does not invent one. Replace it with the same battery type, observe polarity and disposal instructions, and keep coin cells securely away from children because ingestion can cause serious injury.
Final answer · lock it in?
Four modes on the keyring already in your hand.
Choose the E10 when you have a confirmed compatible HomeBase and want a deliberately simple physical controller for Home, Away, Disarm and SOS.
Shipping, warranty and returns.
Shipping
Australia Post Express included on every order over $99.00. Under $99.00: $9.95 tracked or $12.95 Express. We do our best to get orders out the same day; same-day to 1 business day is our typical dispatch time from Townsville, Queensland; during busy periods it can extend, though that is rare.
Warranty
CamGuard Australia is an independent importer and reseller. Our own 12-month warranty applies · not a manufacturer warranty. Faulty or not as described inside that year and we cover the return postage. Your rights under Australian Consumer Law are additional.
Returns
Change of mind: 30 days from delivery, complete and unused, buyer pays return postage, original shipping not refunded. Faulty or not as described: we cover return postage.
Condition on this listing
Brand New. Factory-sealed in full original retail packaging, unopened and unused.
CamGuard Australia
© 2026 CamGuard Australia · ABN 62 385 894 763 · Townsville, QLD. Independent Australian reseller of eufy cameras, doorbells and locks; not an official or authorised supplier of eufy, Anker Innovations or their affiliates. Trademarks belong to their respective owners.
Condition: Brand New. Factory-sealed in full original retail packaging, unopened and unused. We describe packaging and the published spec sheet only and do not open or test each unit individually. Compatibility: Key Fob E10 (T90K0) needs a compatible eufy HomeBase, sold separately; eufy's own product page names HomeBase Mini (v4.0.5.2+), HomeBase 2 (v3.4.1.2+), HomeBase 3 (v3.7.2.6+) and HomeBase Professional (v4.1.4.3+). Battery type is a replaceable CR2032 coin cell; eufy does not publish a battery-life duration for this fob, so this listing does not invent one.
The Fun view's "Channel Four" is a fictional comedy retro-television and game-show framing built for this listing, not affiliated with, endorsed by or sponsored by any real broadcaster, television channel, network or game show, and no real broadcaster name or logo appears. Specifications sourced from the manufacturer and believed accurate at time of listing; features and compatibility may be updated without notice.
Product specifications
- HomeBase requirement
- Required: HomeBase Mini (v4.0.5.2 or above), HomeBase 2 / S280 (v3.4.1.2 or above, released after 2021), HomeBase 3 / S380 (v3.7.2.6 or above) or HomeBase Pro (v4.1.4.3 or above); not included
- Detection method
- Manual button press, four modes: Home, Away, Disarm and SOS
- Power
- 1 × CR2032 battery (user-replaceable, coin-twist cover)
- Wireless protocol
- Sub-1 GHz RF to the HomeBase
- Wireless range
- Up to 200 m (656 ft)
- Weather resistance
- IP65-rated dust and waterproof design; operates reliably in dusty and damp environments
- Operating temperature
- 0 to 50 °C
- Mounting
- Portable. Attaches to a keychain or is worn on a lanyard
- Dimensions
- 62.1 × 34 × 11 mm
- In the box
- Key fob, quick start guide
- Color
-
- White
- Suitable space
-
- Indoors
- Power source
-
- Battery-powered
- Connectivity technology
-
- Wireless
- Control type
-
- Button
Proof from real orders
Customer reviews
Product feedback and verified-buyer experiences collected by Judge.me.