Winner
Updated October 2026
Data from Amazon and official Centralite and Moen sites.
2026 verdict
The Centralite 3-Series Water Sensor is the better budget leak sensor here: it pairs easily with Samsung SmartThings and Home Assistant and runs up to three years on a CR2 battery.
The Moen Smart Leak Detector is the pick when you want local alerts, adding a 51 dB buzzer, an LED and a 48-inch remote sensing disc, along with temperature and humidity trends, at a higher price and with a fiddlier app setup. Choose the Centralite for an inexpensive Zigbee network and the Moen when a remote probe and on-device alerting matter.
vs
$54.72
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| Feature | Centralite 3-Series Water Sensor | Moen Smart Leak Detector | Winner |
|---|---|---|---|
| Price | $19.95 | $54.72 | Centralite 3-Series Water Sensor |
| Rating | 3.8 | 3.3 | Centralite 3-Series Water Sensor |
| Battery Life | 3 years | 2 years | Centralite 3-Series Water Sensor |
| Integrations | Samsung SmartThings, Home Assistant | Home Assistant | Centralite 3-Series Water Sensor |
| On Device Alert Sound | NO | YES | Moen Smart Leak Detector |
| On Device Alert Light | NO | YES | Moen Smart Leak Detector |
| Warranty | 1 year | 1 year | Tie |
| Connectivity | Zigbee | 2.4 GHz WiFi | Tie |
| Sensors | Water Leak, Temperature | Water Leak, Temperature | Tie |
| Alerts | Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts, Low Battery Alerts | Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts | Tie |
What the differences mean
Hub
The Centralite 3-Series Water Sensor is Zigbee and needs a compatible hub. The Moen Smart Leak Detector joins 2.4 GHz Wi-Fi on its own.
Local alert
The Moen Smart Leak Detector has a 51 dB buzzer and an alert light. The Centralite 3-Series Water Sensor has neither, so notifications come only from the hub or app.
Remote probe
The Moen Smart Leak Detector includes a 48-inch remote sensing disc. The Centralite 3-Series Water Sensor has no probe.
Battery
The Centralite 3-Series Water Sensor is rated for three years on a CR2. The Moen Smart Leak Detector uses a CR123A rated for about two years.
Platforms
The Centralite 3-Series Water Sensor reaches Samsung SmartThings and Home Assistant. The Moen Smart Leak Detector has partial Home Assistant support and no HomeKit, SmartThings, Google Home or Matter path.
Which one to buy if
- your home runs on SmartThings or Zigbee
The Centralite 3-Series Water Sensor pairs directly under its brand name in the SmartThings app.
- you want the lowest cost for several sensors
The Centralite 3-Series Water Sensor is the more affordable of the two.
- you need a remote probe and a local alarm
The Moen Smart Leak Detector includes a 48-inch disc, a buzzer and an LED.
- you would rather not depend on a hub
The Moen Smart Leak Detector reports over Wi-Fi directly; the Centralite needs Zigbee.
- battery life is your priority
The Centralite 3-Series Water Sensor is rated for three years against about two for the Moen Smart Leak Detector.
Winner
$19.95
- + Price: $19.95
- + Rating: 3.8
- + Battery Life: 3 years
- - On Device Alert Sound: NO vs YES
- - On Device Alert Light: NO vs YES
$54.72
- + On Device Alert Sound: YES
- + On Device Alert Light: YES
- - Price: $54.72 vs $19.95
- - Rating: 3.3 vs 3.8
What owners say
Owners of both sensors report fast, accurate leak alerts and simple placement. Centralite 3-Series Water Sensor owners praise the smooth SmartThings pairing, the built-in temperature and freeze alerts, and the low price, but the consistent complaint is a CR2 battery that drains far faster than the three-year rating, sometimes with connection drops as it weakens. Moen Smart Leak Detector owners value the remote sensing disc and the temperature and humidity readout, while a large share describe a looping app setup and a battery that arrived partly drained. Both groups warn that battery monitoring, not the sensor itself, is what keeps the protection alive.
Frequently Asked Questions
Which is better overall: Centralite 3-Series Water Sensor or Moen Smart Leak Detector?
For a SmartThings or Zigbee home on a budget, the Centralite 3-Series Water Sensor. It pairs easily, senses water and temperature and runs up to three years on a CR2. The Moen Smart Leak Detector is the better pick when you want a local buzzer and light and a 48-inch remote disc.
Does the Centralite 3-Series Water Sensor need a hub?
Yes. The Centralite 3-Series Water Sensor connects over Zigbee and needs a compatible hub, while the Moen Smart Leak Detector joins 2.4 GHz Wi-Fi directly.
Which of these sensors has a local alarm?
The Moen Smart Leak Detector has a 51 dB buzzer and an alert light. The Centralite 3-Series Water Sensor has neither, so all alerts arrive through the hub or its app.
Do the Centralite 3-Series Water Sensor and the Moen Smart Leak Detector warn about freezing?
Both send freeze-temperature alerts. The Moen Smart Leak Detector also tracks humidity, and the Centralite 3-Series Water Sensor reports temperature without humidity.
Who should buy the Centralite 3-Series Water Sensor?
Samsung SmartThings and Home Assistant users who want an inexpensive Zigbee sensor for sump pumps and appliances and do not need a local alarm.
Who should buy the Moen Smart Leak Detector?
Buyers who want a hub-free Wi-Fi sensor with a 48-inch remote probe, a buzzer and light on the device, and humidity as well as temperature and freeze alerts.
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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AqaraWater Leak Sensor T1
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Unavailable
ShellyFlood S Gen4
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AqaraWater Leak Sensor
5% OFF
$18.99$17.99
GoveeWater Sensor Alarm
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EufyFlood & Freeze Sensor E20
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HeimanSmart Water Leakage Sensor
15% OFF$19.99$16.99
FibaroFlood Sensor (HomeKit)
Unavailable
Third RealityWater Leak Sensor
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