Winner
Updated October 2026
Data from Amazon and official Arlo and Kidde sites.
2026 verdict
For a household already inside Arlo, the Arlo All-in-One Sensor is the more complete detector than the Kidde WiFi Water Leak & Freeze Detector.
It bundles water, freeze and tilt sensing in one puck and, per its spec sheet, lists Google Home, Alexa and Samsung SmartThings support, though it needs an Arlo Security System hub to work at all. The Kidde WiFi Water Leak & Freeze Detector wins back on price and needs no hub, joining Wi-Fi directly with an on-device alarm and freeze alerts. Pick the Arlo if you own the Arlo hub and want tilt detection, and the Kidde for a hub-free sensor with a local siren.
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| Feature | Arlo All-in-One Sensor | Kidde WiFi Water Leak & Freeze Detector | Winner |
|---|---|---|---|
| Price | $23.99 | $23.91 | Kidde WiFi Water Leak & Freeze Detector |
| Rating | 4.1 | 3.9 | Arlo All-in-One Sensor |
| Integrations | Google Home, Alexa, Samsung SmartThings | Google Home, 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 | Kidde WiFi Water Leak & Freeze Detector |
| Warranty | 1 year | 1 year | Tie |
| Weather Resistance | NO | NO | Tie |
| Connectivity | Other | 2.4 GHz WiFi | Tie |
| Alerts | Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts | Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts, Low Battery Alerts | Tie |
What the differences mean
Hub or no hub
The Arlo All-in-One Sensor requires an Arlo Security System and has no radio of its own otherwise. The Kidde joins 2.4 GHz Wi-Fi directly with no hub.
Sensors
The Arlo adds tilt detection on top of water and temperature sensing, so it also notices movement. The Kidde detects water and temperature only.
Alarm
The Kidde has an on-device alert sound. The Arlo has neither a sound nor a light, so a warning reaches you only through the Arlo app.
Integrations
The Arlo lists Google Home, Alexa and Samsung SmartThings support alongside its own app. The Kidde works with Google Home and Home Assistant, with no Alexa, SmartThings or Matter for a leak sensor.
Price
The Kidde is the cheaper of the pair and needs no hub, while the Arlo is an add-on to a security system you may have to own already.
Which one to buy if
- you own an Arlo Security System
The Arlo All-in-One Sensor pairs into the hub you already run and adds to its app.
- you want tilt detection as well as leak and freeze
The Arlo adds a tilt sensor on top of water and temperature detection.
- you want a siren without a hub
The Kidde sounds its alarm on the device and needs no bridge.
- you are covering spots on a budget
The Kidde costs less and needs no hub, so several units stay affordable.
- you want Alexa and SmartThings routines
The Arlo lists Google Home, Alexa and SmartThings support in its spec sheet.
Winner
20% OFF
$23.99
$29.99
- + Rating: 4.1
- + Integrations: Google Home, Alexa, Samsung SmartThings
- + Sensors: Water Leak, Temperature, Tilt
- - Price: $23.99 vs $23.91
- - On Device Alert Sound: NO vs YES
34% OFF
$23.91
$35.97
- + Price: $23.91
- + On Device Alert Sound: YES
- - Rating: 3.9 vs 4.1
- - Integrations: Google Home, Home Assistant vs Google Home, Alexa, Samsung SmartThings
What owners say
Owners of both sensors describe a leak caught in time and a setup that took only minutes. Arlo All-in-One Sensor owners like the small body, the fast pairing through the Arlo app and the combination of water, freeze and tilt sensing in one unit, and several credit it with stopping a bathroom leak from flooding a house; their warnings are the hard dependency on an Arlo Security System hub, a missing probe cable, no local sound or light and a minority who see the battery drain fast or a false status flag. Kidde WiFi Water Leak & Freeze Detector owners value the hub-free Wi-Fi setup and freeze alerts, and their complaints are Wi-Fi pairing, a hard battery cover and a temperature reading that only refreshes every twelve hours.
Price history compared
Every price change of both, in the same store, so the gap between the two lines is what one costs more than the other.
- Arlo All-in-One Sensor
- Kidde WiFi Water Leak & Freeze Detector
Loading price history...
Frequently Asked Questions
Which is better overall: Arlo All-in-One Sensor or Kidde WiFi Water Leak & Freeze Detector?
The Arlo All-in-One Sensor for an existing Arlo Security System household, since it adds tilt sensing and lists Google Home, Alexa and SmartThings. The Kidde WiFi Water Leak & Freeze Detector is the better pick if you have no hub, want a local alarm and pay less.
What is the biggest difference between the Arlo All-in-One Sensor and the Kidde WiFi Water Leak & Freeze Detector?
The hub and the sensing. The Arlo All-in-One Sensor needs an Arlo Security System and adds tilt detection, while the Kidde WiFi Water Leak & Freeze Detector joins Wi-Fi with no hub and adds an on-device alarm.
Does the Arlo All-in-One Sensor need an Arlo hub to work?
Yes. It has no standalone Wi-Fi, Bluetooth, Zigbee, Z-Wave or Thread radio and requires an Arlo Security System to connect and report alerts.
Does the Kidde WiFi Water Leak & Freeze Detector work with Alexa or SmartThings?
No. It supports Google Home and Home Assistant only, with no Alexa leak sensor device type, SmartThings, Apple HomeKit or Matter.
Do both detect freezing pipes?
Yes. Both raise freeze alerts and read temperature; the Arlo All-in-One Sensor also includes a tilt sensor, which the Kidde does not.
Who should buy the Arlo All-in-One Sensor?
An Arlo Security System owner who wants water, freeze and tilt sensing in one small sensor and links to Google Home, Alexa or SmartThings.
Who should buy the Kidde WiFi Water Leak & Freeze Detector?
Anyone without a hub who wants a low-cost Wi-Fi sensor with a local alarm that catches leaks and freezing pipes.
Full comparison table
Compare all 34 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.
- 34 Water Leak Sensors
- 36 specs compared
- 33 filters
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14% OFF$69.99$59.99
SwitchBotWater Leak Detector
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Unavailable
AqaraWater Leak Sensor
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Unavailable
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Unavailable
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Unavailable
CamerasArloEssential Pan Tilt
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Unavailable
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Unavailable
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Water Leak SensorsKiddeWiFi Water Leak & Freeze Detector
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