Hub linkSub-1G to a compatible HomeBase, rated up to 200 m in open area. Brick is famously not open area.
eufy Indoor Siren E20 | Brand New
$98.00
Skip to product information
eufy Indoor Siren E20
Condition Brand New
$98.00
Know before you buy
The quick decision check
- Condition
- Brand New
- Stock
- Available now
- Delivery
- Australia Post Express $12.95 or Standard $9.95. Express is free once your order reaches $99.
- System
- Alarm accessory - HomeBase required
- Recording mode
- Event alerts
- Compatible hubs
- HomeBase 2, HomeBase 3, HomeBase Mini, HomeBase Professional S1
- What you need
- One compatible HomeBase required
Included items: Read this listing's contents before choosing accessories. A condition grade alone does not tell you which parts or packaging are included.
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
Read the customer reviews
- Install type
- DIY
- You’ll need
- A compatible eufy HomeBase (not included); a power point for its USB power
- Tools
- None for the adhesive option; Phillips screwdriver for the screw option
- Time
- Under 10 minutes once your HomeBase is set up (estimate)
Optional extras
Add the extras you need
Check each listing for the exact model pairing and included parts. Unavailable options are left out.
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.
CamGuard Australiaeufy Indoor Siren E20 · T90R0121
Townsville airfield-adjacent alert board · flypast silent · siren emphatically not
The house just
scrambled everything
scrambled everything
A 110 dB indoor siren for the moment a polite phone notification has clearly failed to move the household.
Brand New · factory sealed · full retail packaging
eufy Indoor Siren E20 · T90R0121
Townsville locals know the two-second gap between seeing the fast silhouette and every loose window discovering bass. The E20 brings the actual loud bit, with an alarm light and backup battery.
110 dB at 10 cmAlarm lightUp to 48 hr backupHomeBase requiredNo required subscription
We do our best to dispatch the same day; same-day to 1 business day is typical. During busy periods it can extend.
AIRFIELD-ADJACENT ADVISORY · SILENT FLYPAST · 110 dB SIREN · HOMEBASE REQUIRED · LOOSE WINDOWS HAVE BEEN BRIEFED ·
Runway 110 · level selector
Four settings, because the neighbour owns a shift-work roster
Mute, 60, 85 and 110 dB are controlled in the app. High is measured at 10 cm and ships as the default. Testing that beside your face is a decision between you and your future tinnitus.
0MUTE · library airspace
60LOW · microwave finished
85MED · everyone heard it
110HIGH · geckos evacuated
Control tower · hardware feed
A dedicated alert appliance, not a detector with main-character syndrome
ALARM LIGHT · ARMED
Hub link
Light + soundUseful when the television is carrying on or somebody sleeps like they signed a treaty with noise.
Indoor mountPlace near mains power. North Queensland weather remains outside, where it can frighten the bins instead.
Boarding gate · HomeBase check
No HomeBase, no take-off, no tiny hallway Top Gun montage
This siren is an accessory. It detects nothing itself and cannot pair as a standalone alarm.
Scan your HomeBase boarding pass
HomeBase MiniSupported on v4.0.5.2 or later.
HomeBase 2 after 2021S280 on v3.4.1.2 or later; older units are not listed.
HomeBase 3S380 on v3.7.2.6 or later; sold separately.
Professional S1Supported on v4.1.4.3 or later.
Router / cameraNot a substitute, regardless of confidence.
Original HomeBaseNot on the boarding list.
Blackout operations · cyclonic honesty
When the mains taps out, the siren keeps its hi-vis on
UP TO
48 HR
48 HR
19:42 · MAINS LOST
Internal rechargeable 800 mAh cell takes over.
19:43 · HOUSEHOLDSomeone asks whether the Wi-Fi is down before checking if the fridge is still alive.
RESTORATIONWhen mains returns, the backup cell recharges itself. It is outage cover, not permission to turn the siren permanently cordless.
Scramble chain · who does what
Sensors spot it. HomeBase decides. Siren removes all ambiguity.
01 · Detection
Compatible sensors, cameras or panic buttons report an event.
Compatible sensors, cameras or panic buttons report an event.
02 · Command
The HomeBase applies the automation you configured.
The HomeBase applies the automation you configured.
03 · Response
The E20 flashes and sounds at the chosen level.
The E20 flashes and sounds at the chosen level.
04 · Neighbourhood
Everyone develops a sudden interest in whether you tested the system first.
Everyone develops a sudden interest in whether you tested the system first.
Interactive Townsville local knowledge
Authorise one silent flypast and one tiny page rattle
Clear fictional aircraft across the board
Why Townsville gets this joke: the city sits beside a busy defence airfield. The surprise military-jet flypast is part of local life; this silent scene is fictional and unaffiliated. Your actual windows may submit a separate complaint.
Preflight card · do not laminate over these bits
The limitations, in control-tower English
Open aircraft-adjacent operating card
Model
T90R0121
T90R0121
Maximum
110 dB at 10 cm
110 dB at 10 cm
Backup
Up to 48 hours
Up to 48 hours
Cell
800 mAh internal, not user-replaceable
800 mAh internal, not user-replaceable
Radio
Sub-1G to hub
Sub-1G to hub
Open-area range
Up to 200 m
Up to 200 m
Environment
Indoor use
Indoor use
Subscription
Not required for local alarm function
Not required for local alarm function
Ground crew · exact sealed-box loadout
Seven loads cleared. The HomeBase missed the flight on purpose.
The factory-sealed E20 carton has one siren plus six support groups. No sound effect is attached to this page; startling someone at checkout is not a conversion strategy.
PWRUSB power cableloaded
AUPower adapterloaded
3M3M adhesive setloaded
BRKTPreinstalled mounting bracketloaded
FIXScrew setloaded
QSGPrinted Quick Start Guideloaded
Condition check: Brand New, factory sealed, full original retail packaging—not renewed, open-box or new-no-box.
Power check: mains power is the normal route; the internal 800 mAh cell is outage backup rated up to 48 hours, not a reason to install it permanently cordless.
Tower questions · final approach
Clearances before mounting
Can I use it without a HomeBase?
No. A compatible eufy HomeBase is mandatory and not included. This is repeated because it is the only expensive misunderstanding on the runway.
Does it need Wi-Fi itself?
It communicates with the HomeBase over Sub-1G rather than joining Wi-Fi directly. The wider eufy system and app still rely on the hub’s setup.
Does it keep working in a blackout?
eufy rates the internal rechargeable backup cell for up to 48 hours. Treat that as outage cover, not a reason to leave mains disconnected.
Will the page make a noise?
No. The aircraft is silent. The real siren is loud; surprising online shoppers with 110 dB would be both impossible and deeply rude.
What comes in the sealed box?
Indoor Siren E20, USB power cable, power adapter, 3M adhesive set, preinstalled mounting bracket, screw set and printed Quick Start Guide. A HomeBase is required and not included.
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
- Power
- Non-replaceable Li battery, 800 mAh, 3.7 V
- Battery life
- Up to 48 hours of backup during a power outage; recharges automatically when power returns
- Wireless protocol
- Sub-1 GHz RF to the HomeBase
- Wireless range
- Up to 200 m (656 ft) in open air
- Weather resistance
- Indoor use only — eufy states it cannot be used outdoors
- Operating temperature
- 0 to 50 °C
- Sound level
- 110 dB, volume adjustable
- Mounting
- Free-standing on a desk, wall-mounted with the included 3M adhesive strip, or screw-mounted
- Dimensions
- 81.3 × 81.3 × 41.3 mm
- In the box
- Indoor siren, USB cable, power adapter, 3M adhesive, mounting bracket (pre-installed on the device), mounting screws, quick start guide
- Color
-
- White
- Power source
-
- Battery-powered
- Rechargeable
- USB
- Connectivity technology
-
- Wireless
- Home alarm features
-
- Battery backup
- Alert type
-
- Sound alarms
- Mounting type
-
- Wall
- Control type
-
- Button
Proof from real orders
Customer reviews
Product feedback and verified-buyer experiences collected by Judge.me.