Check the route from water to alert

Choose the exact model on the box. Check where the alarm sounds, what sends a phone notification and what hardware is needed.

Govee H5059

At the leak: The sensor sounds and flashes. On your phone: The H5044 gateway connects to 2.4 GHz Wi-Fi and relays alerts to the Govee app. The gateway and three-sensor kit includes it. The sensor-only pack does not. Check the gateway label for H5044 before buying extra sensors.

Govee product and kit details

Moen 920-004

At the leak: The detector sounds and flashes. On your phone: It connects directly to 2.4 GHz Wi-Fi. For automatic shutoff, Moen specifies a separately installed Flo Smart Water Shutoff.

Moen specification sheet

Original Aqara Water Leak Sensor

In the home: The paired Aqara hub sounds the alarm. On your phone: The hub sends the notification. Check support for the original sensor on your exact hub and firmware. A sensor multipack does not include the hub.

Aqara sensor documentation

Ecolink FLF-ZWAVE5

On your phone: This depends on the exact Z-Wave controller, its device driver and the notifications you configure. Confirm support for the flood and freeze reports before buying. The Z-Wave label alone does not establish that your controller supports both.

Ecolink product documentation

These are documented connection paths. Test the audible alarm and phone notification in the installed location. Remote alert behavior during power, Wi-Fi or internet failure depends on the setup.

Short answer: For most homes, buy the GoveeLife Smart Water Leak Detector 1s kit: three sensors and a Wi-Fi gateway in the box, a loud alarm at the sensor and a phone alert, using the included H5044 gateway. Choose the Moen Smart Leak Detector for a basement or crawl space where freeze and humidity alerts matter, the Aqara Water Leak Sensor for Apple Home (with an Aqara hub), and the Ecolink Flood/Freeze Sensor if your exact Z-Wave controller and driver support the sensor.

This is desk research from maker pages, spec sheets and Amazon listings. No detectors were tested for this page.

Picks at a glance

Pick Best for Connects with Power (maker) Extra hardware Buy
GoveeLife Water Leak Detector 1s Most homes, several rooms Included Wi-Fi gateway; Govee app AAA batteries None (gateway included) Amazon
Moen Smart Leak Detector 920-004 Basements, freeze and mold risk 2.4 GHz Wi-Fi; Flo by Moen app 1 CR123A, up to 2 years None Amazon
Aqara Water Leak Sensor Apple Home households Zigbee via an Aqara hub; HomeKit CR2032, 2+ years Aqara hub Amazon
Ecolink FLF-ZWAVE5 Existing Z-Wave systems Z-Wave Plus 1 CR123A, up to 5 years Z-Wave hub Amazon

Who should buy which

  • First smart leak sensor, no hub at home: GoveeLife. The gateway kit includes the H5044. Choose the sensor-only pack only if you already have a compatible H5044.
  • Parent’s house with a basement or a cold utility room: Moen, for the temperature and humidity alerts.
  • iPhone household that wants alerts in the Home app: Aqara, if you have or will add an Aqara hub.
  • You have verified support on your exact Z-Wave controller: Ecolink.

GoveeLife Water Leak Detector 1s

Govee sells the 1s as sensors plus a Wi-Fi gateway that relays alerts to the Govee app. Its product page lists a range of up to 1,804 feet (550 m) between sensor and gateway, an adjustable alarm up to 105 dB, AAA batteries, and an IP67 rating on the sensor. Walls and placement affect real range. Test the connection from each planned sensor location.

Trade-off: the documented phone path uses the H5044 gateway and the Govee app. Check the sensor alarm and phone delivery separately during setup.

Moen Smart Leak Detector (920-004)

Moen’s spec sheet says the detector watches for water and measures room temperature and humidity, with alerts you can set in the app. On a leak, high humidity or an extreme temperature it sends an app alert, sounds an alarm and flashes an LED. It runs on one CR123A battery rated up to two years, connects to 2.4 GHz Wi-Fi with no hub, and comes with a 48-inch remote sensing cable for reaching behind a water heater.

Trade-off: each sensor costs more than a Govee sensor, so it is the pick for the one or two riskiest spots rather than every sink.

Aqara Water Leak Sensor

Aqara says the sensor needs an Aqara hub and, through that hub, works with Apple Home. It runs on a CR2032 coin cell that Aqara rates for over two years, triggers when water reaches about 0.5 mm, and makes the hub sound an alarm and send a phone notification.

Trade-off: the hub is required, and the alarm sounds at the hub, not at the sensor. If you do not have an Aqara hub yet, the smart home hub buying guide explains when one is worth adding; Aqara’s Camera Hub G5 Pro is one hub option.

Ecolink lists a 41°F (5°C) freeze warning, an external flood probe on a 36-inch cable, one CR123A lithium battery with up to five years of life, and a small 3.35-inch body. Any automation depends on the exact controller and the events its driver exposes.

Trade-off: remote alerts and automations depend on a compatible controller and its configuration. You need a Z-Wave hub, and someone has to set up the alerts there.

Where to put leak sensors

  • Under the kitchen sink and each bathroom sink.
  • Beside the water heater and behind the washing machine.
  • Next to the toilet supply line and near a sump pump.
  • For freeze risk, in an unheated basement, crawl space or garage with plumbing.

A sensor only warns you. To stop the water automatically you need a shutoff valve, which is a separate, plumbed purchase.

Sources