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Product guide

eufy Security Siren T8970, 105 dB, IP65

T8970 IP65: The eufy Security Siren is a battery-powered alarm accessory for a compatible HomeBase. It is listed with a 105 dB sound level, app control and indoor/outdoor use, but the HomeBase is required and is not listed among the box contents.

At a glance

Requires a HomeBase to operate. The listing describes compatibility with HomeBase S380 and S280.
Connects to HomeBase using Sub-1G communication, with app notifications relayed through HomeBase.
The listing claims adjustable volume up to 105 dB and weather-resistant indoor/outdoor use.
Two CR123 batteries are claimed to last up to two years.

Price

£24.99Save 38%

Reference price: ~~£39.99~~

Price checked: 12 Nov 2026

View offer Ahead of Black FridayExplore the selection

Often bought together

eufy Security Home Alarm System Motion Sensor, 100° Coverage, 30 ft Detection Range, 2-Year Battery Life, Adjustable Sensitivity (HomeBase Required)

£16.99

eufy Security 5-Piece Home Alarm Kit, Home Security System, Keypad | Motion Sensor, 2 Entry Sensors, Home Alarm System, Control From the App, Links with eufyCam

£109.00

Pros and cons

Pros

App notifications and battery-status checks are described as available through the eufy Security app.
The listing claims installation without tools or professional help.

Technical specifications

10 specifications

Identity
Brand	eufy Security
Model	eufy Security Siren

Alarm and control
Listed sound level	105 Decibels
Sensor technology	Motion Sensor
Control method	App
Compatible devices	Smartphone, Tablet, HomeBase 2, HomeBase 3

Power
Power configuration	Battery Powered

Dimensions and installation
Mounting type	Tabletop Mount
Dimensions	10.2L x 10.2W x 10.2H centimetres
Weight	0.44 Pounds

What to know before buying

Listing details to confirm

The listing details are inconsistent: one entry says two lithium-ion batteries are required and included, while the feature text specifies two CR123 batteries, and the box list specifies one CR123 battery. The box list also calls the device a Smoke Alarm Listener, while the title and feature text describe a siren. Confirm the selected listing’s model, battery count and contents before buying. HomeBase is required and not listed in the box contents. The stated 105 dB is a listing claim, while customer feedback on loudness is mixed.

What’s in the box

1 Quick Start Guide (QSG)Included
1 Smoke Alarm ListenerCheck selected pack
1 CR123 BatteryCheck selected pack
Mounting screwsIncluded

Check which accessories are included in your selected pack before buying.

Who is it for?

A good fit for

Owners of a compatible HomeBase who want an app-linked alarm accessory with remote notifications.
Buyers looking for a siren described for indoor and outdoor placement and willing to check the sound level suits their setting.

Less suited to

Anyone who needs a standalone alarm without a HomeBase.
Buyers who need confirmed package contents or battery configuration without checking the listing.

eufy Security Siren T8970, 105 dB, IP65 · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.4 / 5 · 516 ratings

5 stars71%71%
4 stars13%13%
3 stars8%8%
2 stars3%3%
1 star5%5%

Customer feedback highlights easy setup and positive impressions of connectivity, while loudness, functionality, quality and value receive mixed reactions. For buyers adding it to a compatible HomeBase system, the reported setup and connectivity positives may matter, but the stated 105 dB figure does not settle concerns about perceived loudness. Weather resistance is a listing claim, and feedback on it is also mixed.

Positive themes

Customers report that setup is easy.
Customers describe it as a useful addition to their alarm system and respond positively to its connectivity.

Mixed feedback

Customers disagree on whether the siren sounds as loud as suggested.
Feedback is mixed on functionality, quality, value for money and weather resistance.

Frequently asked questions

Does this siren work without a HomeBase?

No. The listing says HomeBase is required for operation and for relaying notifications to the app.

Which HomeBase models are listed as compatible?

The feature text names HomeBase S380 and S280. The device details separately list HomeBase 2 and HomeBase 3, so confirm compatibility for your specific model before buying.

What batteries are included?

The listing is inconsistent. It mentions two CR123 batteries in the feature text, two lithium-ion batteries in the details, and one CR123 battery in the stated box contents. Check the selected listing.

Is the alarm definitely 105 dB?

The listing claims a sound level of 105 dB and adjustable volume. Customer feedback is mixed on whether the siren sounds as loud as expected, so treat the figure as a listing claim rather than an independently verified result.