Updated November 2026
Data from the official Eufy and Ring sites.
2026 verdict
A few extra decibels against a sturdier, more flexible outdoor unit, and the Ring Alarm Outdoor Siren is the better alarm siren of the two.
It adds a tamper sensor, a red warning light, a choice of battery or wired power, 3 years on its D batteries against 2, an alarm that sounds from 1 to 10 minutes, IP66 weather resistance and Alexa and Home Assistant support. The Eufy Security Siren is louder on paper at 105 dB against 100 dB and far more compact, but it sounds a single beep for a fixed 30 seconds and works only through a Eufy HomeBase. Neither is a standalone siren: each extends its own brand's alarm system. Pick the Ring Alarm Outdoor Siren for a Ring Alarm home that wants a visible outdoor deterrent, and the Eufy Security Siren only if your alarm already runs on a Eufy HomeBase.
Connectivity
- Wi-Fi 2.4 GHz
vs
Winner
Works with
Connectivity
News by email
Still comparing? Get what's new by email
New releases and the smart home news worth knowing, in your inbox.
No spam. Unsubscribe in one click.
| Feature | Eufy Security Siren | Ring Alarm Outdoor Siren | Winner |
|---|---|---|---|
| Rating | 4.3 | 4.6 | Ring Alarm Outdoor Siren |
| Battery Life | 2 years | 3 years | Ring Alarm Outdoor Siren |
| Integrations | None | Alexa, Home Assistant | Ring Alarm Outdoor Siren |
| Sensors | None | Tamper | Ring Alarm Outdoor Siren |
| Sound Level | 105 dB | 100 dB | Eufy Security Siren |
| Warranty | 1 year | 1 year | Tie |
| Solar Charging | NO | NO | Tie |
| Connectivity | 2.4 GHz WiFi | Z-Wave | Tie |
| Presence Simulation | NO | NO | Tie |
What the differences mean
How long it sounds
The Eufy Security Siren always stops after 30 seconds. The Ring Alarm Outdoor Siren can sound for 1 to 10 minutes, long enough to keep drawing attention while you respond.
Volume
105 dB for the Eufy against 100 dB for the Ring. On paper the Eufy is louder, but owners of both describe them as loud enough to startle, so the gap is small in practice.
Tamper protection and light
The Ring Alarm Outdoor Siren has a tamper sensor and a red LED that flashes during an alert. The Eufy Security Siren has neither, so it can be pulled down without the system noticing.
Power
The Ring runs on 3 D batteries for about 3 years or can be wired for permanent power. The Eufy runs on 2 CR123 cells for about 2 years and cannot be wired.
Size and weatherproofing
The Eufy Security Siren is a small 104 mm square rated IP65, suited to sheltered spots. The Ring is a 235 mm outdoor unit rated IP66, built to be seen on an exterior wall.
What it connects to
The Eufy needs a Eufy HomeBase and has no voice assistant support. The Ring joins a Ring Alarm system and also works with Alexa and Home Assistant.
Which one to buy if
- your alarm is a Ring Alarm system
The Ring Alarm Outdoor Siren pairs with it directly and adds a visible outdoor deterrent.
- your cameras and sensors already run through a Eufy HomeBase
The Eufy Security Siren only works with that HomeBase, and fits into Eufy automations.
- you want the siren to keep sounding for minutes
Its duration can be set from 1 to 10 minutes, against a fixed 30 seconds on the Eufy.
- you want a small siren that does not stand out
At 104 mm across, the Eufy Security Siren is less than half the size of the Ring.
- + Sound Level: 105 dB
- - Rating: 4.3 vs 4.6
- - Battery Life: 2 years vs 3 years
Winner
£69.99
- + Rating: 4.6
- + Battery Life: 3 years
- + Integrations: Alexa, Home Assistant
- - Sound Level: 100 dB vs 105 dB
What owners say
Owners of both sirens bought them for the same reason, a base station whose own alarm was too quiet, and both groups say the add-on is loud enough to startle an intruder and pairs in minutes through the app. Eufy Security Siren owners running full Eufy setups single out how well it fits into automations and scenes and its sturdy build, and they complain about no tamper sensor, no way to set it off by hand from the app, one tone with a fixed 30 second duration and an early entry-delay bug later fixed by firmware. Ring Alarm Outdoor Siren owners praise its weatherproofing, the red light as a night-time deterrent and being able to adjust volume and duration, and their main complaint is swapping D batteries, which pushes some to hardwire it, plus the wiring or adapter needed for the Dusk to Dawn light.
Frequently Asked Questions
Which is better overall: Eufy Security Siren or Ring Alarm Outdoor Siren?
The Ring Alarm Outdoor Siren. It adds tamper detection, a warning light, wired or battery power, longer battery life, an adjustable alarm duration and Alexa support. The Eufy Security Siren is slightly louder and much smaller.
Ring alarm vs Eufy alarm: which siren is louder?
The Eufy Security Siren is rated at 105 dB and the Ring Alarm Outdoor Siren at 100 dB. The Ring makes up for it with an alarm that can run up to 10 minutes and a red warning light.
Do the Eufy Security Siren and the Ring Alarm Outdoor Siren work on their own?
No. The Eufy Security Siren needs a Eufy HomeBase, and the Ring Alarm Outdoor Siren is an add-on for a Ring Alarm system. Neither replaces a base station.
Can the Ring Alarm Outdoor Siren be hardwired?
Yes. The Ring Alarm Outdoor Siren runs on 3 D batteries or wired power, and wired power also enables its Dusk to Dawn light. The Eufy Security Siren is battery only, on 2 CR123 cells.
Who should buy the Eufy Security Siren?
Owners of a Eufy HomeBase system who want a louder alarm in more rooms of the house, with no wiring and a compact unit.
Who should buy the Ring Alarm Outdoor Siren?
Ring Alarm households that want a loud, weatherproof and visible outdoor siren with tamper protection and an adjustable alarm length.
Spotted something wrong on this page? Tell us and we will fix it.
Our store on AmazonShop our ideas on AmazonLists of the smart home setups we would put together ourselves, ready to add to your Amazon cart.Shop on AmazonFull comparison table
Compare all 8 Sirens side by side
You are looking at two of them. The full table lines up all Sirens in the catalog with the same specs, so you can filter by what you need and sort by price or rating.
- 8 Sirens
- 36 specs compared
- 33 filters
- Cameras
4G Camera S230
- Cameras
4G LTE Cam S330
- Cameras
Cam S3 Pro
- Cameras
Cam S330
- Cameras
Cam S4
- Cameras
eufyCam C35
- Cameras
eufyCam C37
- Cameras
Indoor Cam C120
- Cameras
Indoor Cam E220
- Cameras
Indoor Cam E30
- Cameras
Indoor Cam S350
- Cameras
Outdoor Cam E210
- Cameras
Outdoor Cam E220
- Cameras
PoE Bullet-PTZ Cam E50
- Cameras
SoloCam E30
- Cameras
SoloCam E42
- Cameras
SoloCam E50 (S340 Next-Gen)
- Cameras
SoloCam S220
- Cameras
SoloCam S230
- Cameras
SoloCam S340
- Alarm Systems
Alarm (2nd Gen) 5-Piece Kit
- Alarm Systems
Alarm (2nd Gen) 8-Piece Kit
- Alarm Systems
Alarm (2nd Gen) EU
- Alarm Systems
Alarm Pro 14-Piece Kit
- Alarm Systems
Alarm Pro 8-Piece Kit
- Cameras
Floodlight Cam 2K
- Cameras
Floodlight Cam 4K Plus (Wired)
- Cameras
Floodlight Cam 4K Pro
- Cameras
Floodlight Cam Wired Plus
- Cameras
Indoor Cam 4K
- Cameras
Indoor Cam Plus
- Cameras
Ring Indoor Cam
- Cameras
Outdoor Cam (2nd Gen)
- Cameras
Outdoor Cam 4K Pro (Plug-In)
- Cameras
Ring Outdoor Cam Plus
- Cameras
Ring Outdoor Cam
- Cameras
Pan-Tilt Indoor Cam 2K
- Cameras
Pan-Tilt Indoor Cam
- Cameras
Spotlight Cam 2K
- Cameras
Spotlight Cam 4K Pro (2nd Gen)