Arlo All-in-One Sensor vs Kidde WiFi Water Leak & Freeze Detector

The Kidde WiFi Water Leak & Freeze Detector wins overall on price, alerts, and an on-device siren. The Arlo All-in-One Sensor is the better-reviewed multi-sensor if you already own an Arlo Security System and want tilt as well as leak and freeze.

The hub. The Kidde WiFi Water Leak & Freeze Detector is standalone 2.4 GHz Wi-Fi with a siren on the puck. The Arlo All-in-One Sensor requires an Arlo Security System, adds tilt sensing, works with Alexa, Google Home and SmartThings, and has no on-device sound or light.

Yes. Both the Arlo All-in-One Sensor and the Kidde WiFi Water Leak & Freeze Detector include freeze-temperature alerts alongside water-leak detection. Arlo also adds tilt; Kidde also lists general temperature alerts and low-battery alerts.

No. It needs an Arlo Security System and has no standalone Wi-Fi, Zigbee, Z-Wave or Thread radio. The Kidde WiFi Water Leak & Freeze Detector works on its own once it joins Wi-Fi.

Existing Arlo Security System owners who want leak, freeze and tilt in one small puck, with Alexa, Google Home or SmartThings, and who do not need a siren on the sensor.

Buyers who want the cheaper hub-free Wi-Fi leak-and-freeze puck with a local siren, without buying into Arlo's security hub.