Water Leak Sensors · Head to head

Arlo All-in-One Sensor vs Shelly Flood Gen4

Full Smart Water Leak Sensors comparison in 2026

Updated June 2026
Data from Amazon and official Arlo and Shelly sites.
2026 verdict
Shelly Flood Gen4 wins the 2026 matchup against Arlo All-in-One Sensor, mainly on warranty, weather resistance, and connectivity. It separates itself most clearly on warranty, weather resistance, and connectivity, while still looking better on integrations and alerts. Choose Arlo All-in-One Sensor only if price and sensors matters more to you than the broader advantage from Shelly Flood Gen4. For the average buyer, Shelly Flood Gen4 is the safer choice.
vs
FeatureArlo All-in-One SensorShelly Flood Gen4Winner
Price$29.59$39.99Arlo All-in-One Sensor
Warranty1 year3 yearsShelly Flood Gen4
Weather ResistanceNOIP44Shelly Flood Gen4
ConnectivityOther2.4 GHz WiFi, Bluetooth, ZigbeeShelly Flood Gen4
IntegrationsGoogle Home, AlexaGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterShelly Flood Gen4
SensorsWater Leak, Temperature, TiltWater Leak, TemperatureArlo All-in-One Sensor
AlertsWater Leak Alerts, Freeze Temperature AlertsWater Leak Alerts, Temperature Alerts, Freeze Temperature AlertsShelly Flood Gen4
On Device Alert SoundNOYESShelly Flood Gen4
On Device Alert LightNOYESShelly Flood Gen4
Rating4.24.2Tie

Frequently Asked Questions (FAQ)

Which is better overall: Arlo All-in-One Sensor or Shelly Flood Gen4?
Shelly Flood Gen4 has the stronger overall profile in this comparison, especially for warranty, weather resistance, and connectivity.
What is the biggest difference between Arlo All-in-One Sensor and Shelly Flood Gen4?
Price is one of the clearest differences: Arlo All-in-One Sensor lists $29.59, while Shelly Flood Gen4 lists $39.99.
Which one looks better on price?
Arlo All-in-One Sensor is listed at $29.59, while Shelly Flood Gen4 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 sensors and that matters more than warranty.
Who should buy Shelly Flood Gen4?
Choose Shelly Flood Gen4 if your priority is warranty and weather resistance and that matters more than price.
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