Arlo All-in-One Sensor vs eufy Security Flood & Freeze Sensor E20

Updated September 2026

Data from Amazon and official Arlo and Eufy sites.

2026 verdict

eufy Security Flood & Freeze Sensor E20 wins the 2026 matchup against Arlo All-in-One Sensor, mainly on rating, weather resistance, and on device alert sound.

Winner

eufy Security Flood & Freeze Sensor E20

$39.99

Buy on Amazon USACheck price

It wins the broader comparison through rating, weather resistance, and on device alert sound, while on device alert light helps confirm the result. Pick Arlo All-in-One Sensor only when price, integrations, and sensors are the deciding factor for your setup. For the average buyer, eufy Security Flood & Freeze Sensor E20 is the safer choice.

Arlo

Arlo All-in-One Sensor

27% OFF

$21.98

$29.99

Buy on Amazon USACheck price

Winner

Eufy

eufy Security Flood & Freeze Sensor E20

$39.99

Buy on Amazon USACheck price Buy on Amazon Canada

Price alerts

Water Leak Sensor prices change while you decide

We check the price of every Water Leak Sensor in the catalog daily and email you the drops, whichever one you pick.

Your subscription could not be saved. Please try again.

Your subscription has been successful.

Feature	Arlo All-in-One Sensor	eufy Security Flood & Freeze Sensor E20	Winner
Price	$21.98	$39.99	Arlo All-in-One Sensor
Rating	4.1	4.2	eufy Security Flood & Freeze Sensor E20
Weather Resistance	NO	IP54	eufy Security Flood & Freeze Sensor E20
Integrations	Google Home, Alexa, Samsung SmartThings	Home Assistant	Arlo All-in-One Sensor
Sensors	Water Leak, Temperature, Tilt	Water Leak, Temperature	Arlo All-in-One Sensor
On Device Alert Sound	NO	YES	eufy Security Flood & Freeze Sensor E20
On Device Alert Light	NO	YES	eufy Security Flood & Freeze Sensor E20
Connectivity	Other	2.4 GHz WiFi	Tie
Alerts	Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts	Water Leak Alerts, Freeze Temperature Alerts, Low Battery Alerts	Tie

Arlo

Arlo All-in-One Sensor

27% OFF

$21.98

$29.99

Buy on Amazon USACheck price

+ Price: $21.98
+ Integrations: Google Home, Alexa, Samsung SmartThings
+ Sensors: Water Leak, Temperature, Tilt
- Rating: 4.1 vs 4.2
- Weather Resistance: NO vs IP54

Winner

Eufy

eufy Security Flood & Freeze Sensor E20

$39.99

Buy on Amazon USACheck price Buy on Amazon Canada

+ Rating: 4.2
+ Weather Resistance: IP54
+ On Device Alert Sound: YES
- Price: $39.99 vs $21.98
- Integrations: Home Assistant vs Google Home, Alexa, Samsung SmartThings

Frequently Asked Questions

Which is better overall: Arlo All-in-One Sensor or eufy Security Flood & Freeze Sensor E20?

eufy Security Flood & Freeze Sensor E20 has the stronger overall profile in this comparison, especially for rating, weather resistance, and on device alert sound.

What is the biggest difference between Arlo All-in-One Sensor and eufy Security Flood & Freeze Sensor E20?

Price is one of the clearest differences: Arlo All-in-One Sensor lists $21.98, while eufy Security Flood & Freeze Sensor E20 lists $39.99.

Which one looks better on price?

Arlo All-in-One Sensor is listed at $21.98, while eufy Security Flood & Freeze Sensor E20 is listed at $39.99. Arlo All-in-One Sensor (better spec).

Who should buy Arlo All-in-One Sensor?

Choose Arlo All-in-One Sensor if your priority is price and integrations and that matters more than rating.

Who should buy eufy Security Flood & Freeze Sensor E20?

Choose eufy Security Flood & Freeze Sensor E20 if your priority is rating and weather resistance and that matters more than price.

Full comparison table

Compare all 33 Water Leak Sensors side by side

You are looking at two of them. The full table lines up all Water Leak Sensors in the catalog with the same specs, so you can filter by what you need and sort by price or rating.