The Best Z-Wave Water Leak Sensors

Z-Wave flood sensors for your hub, ranked from live Amazon data.

We pulled the Z-Wave water leak sensors selling on Amazon and scored them on rating, review volume, and features: 800 Series Long Range radios, probes and cables, and freeze or temperature alerts.

Prices, ratings, and review counts captured from Amazon on 2026-10-04.

Our picks

Best Overall

Ecolink

Ecolink FLF-ZWAVE5-ECO

4.3 (379)

Flood and freeze alerts, a 36 in. probe, a 5-year battery, and the most reviews here.

Aeotec Water Sensor 7 (basic)

3.4 (33)

$24.99 for a 700 Series leak sensor that detects 0.02 in. of water.

3.8 (155)

Tiny, IP66 sealed, and 800 Series Long Range for basements far from the hub.

Aeotec Water Sensor 8

4.1 (6)

Leak, temperature, humidity, and mold risk, with Long Range and a 4-year battery or USB-C power.

$39.95

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Side-by-side

Swipe the table sideways to see every column.

#	Sensor	Price	Rating	Reviews	Chip	Detection	Also senses	Power	Score
1	Ecolink FLF-ZWAVE5-ECO	$34.99	4.3	379	Z-Wave Plus	36 in. probe	Freeze alert at 41°F	CR123A, about 5 years	85
2	Aeotec Water Sensor 7 Pro	$29.99	4.1	119	700 Series	0.02 in. of water	Temperature, humidity	Battery, about 3 years	71
3	Zooz ZSE42 800LR	$39.95	3.8	155	800 Series	Built-in contacts	None listed	Battery	66
4	Aeotec Water Sensor 8	$39.95	4.1	6	800 Series	Built-in	Temperature, humidity, mold risk	Battery up to 4 yrs or USB-C	65
5	Ezlo Water leak detector (LR)	$28.95	3.7	11	800 Series	Probe or built-in prongs	None listed	Battery	59
6	NEO Z-Wave Plus 700 leak sensor	$29.99	4.0	15	700 Series	Probe	None listed	CR2 battery	56
7	HomeSeer LS100 G8	$39.95	3.9	11	800 Series	Built-in	Not listed	Battery	55
8	Aeotec Water Sensor 7 (basic)	$24.99	3.4	33	700 Series	0.02 in. of water	None listed	Battery, about 3 years	53

Works with: hover or tap an icon for the system name. A system is shown when it supports the product directly or through the hub the listing requires.

The full ranking

Scored out of 100: 45% customer rating, 30% review volume, 25% features.

Best Overall

Ecolink

Ecolink FLF-ZWAVE5-ECO Z-Wave Plus Flood/Freeze Sensor, White, Smart Home

4.3 379 reviews

Score 85/100

$34.99

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The best all-rounder: it catches leaks and warns you before pipes freeze, and the battery lasts years.

Z-Wave chip: Z-Wave Plus
Long Range: No
Detection: 36 in. probe
Also senses: Freeze alert at 41°F
Power: CR123A, about 5 years

Pros

Freeze alert at 41°F, can also tell a Z-Wave thermostat to add heat
36 in. probe reaches behind appliances
Rated for about 5 years on one battery
379 reviews at 4.3 stars

Cons

Older Z-Wave Plus chip
Sold by a third-party seller
No built-in siren

Aeotec

PRO Version: Aeotec Water Sensor 7 Pro, with Flood, Temperature, Humidity Sensor, SmartThings Sensor Compatible, Z-Wave Plus, S2, SmartStart, ZWave hub Required

4.1 119 reviews

Score 71/100

$29.99

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A sensitive leak sensor with temperature and humidity for bathrooms and laundry rooms.

Z-Wave chip: 700 Series
Long Range: No
Detection: 0.02 in. of water
Also senses: Temperature, humidity
Power: Battery, about 3 years

Pros

Detects as little as 0.02 in. of water
Temperature and humidity
3-year battery

Cons

No Long Range
4.1 stars
Sold by the brand

Best Long Range

Zooz

Zooz 800 Series Z-Wave Long Range Water Leak XS Sensor ZSE42 800LR for for smart Flood Prevention. Hub Required (Sold Separately). Compatible with SmartThings, Hubitat, and Z-Box Hub.

3.8 155 reviews

Score 66/100

$39.95

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A tiny, fully sealed Long Range leak sensor for tight spots under appliances.

Z-Wave chip: 800 Series
Long Range: Yes
Detection: Built-in contacts
Also senses: None listed
Power: Battery

Pros

Extra small, fits under appliances
IP66 sealed battery cover
800 Series Long Range

Cons

Supported by open Z-Wave hubs only, per the listing
3.8 stars
No probe or temperature

Most Sensors

Aeotec

Aeotec Water Sensor 8, Z-Wave Plus 800 Series with Long Range Support, Leak Detector with Temperature & Humidity, SmartThings Compatible, Battery or USB-C Powered Flood Sensor

4.1 6 reviews

Score 65/100

$39.95

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50+ bought in past month

A leak sensor that also watches temperature, humidity, and mold risk, with Long Range.

Z-Wave chip: 800 Series
Long Range: Yes
Detection: Built-in
Also senses: Temperature, humidity, mold risk
Power: Battery up to 4 yrs or USB-C

Pros

Temperature, humidity, and mold-risk alerts
Z-Wave Long Range
Battery up to 4 years, or USB-C

Cons

Only 6 reviews
17 left in stock at capture time
$39.95

Ezlo

Ezlo Z-Wave Smart Water Leak Detector, Water Leak Sensor, Long Range | Z-Wave Hub Required

3.7 11 reviews

Score 59/100

$28.95

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A Long Range sensor with both a probe and built-in prongs, for awkward spots.

Z-Wave chip: 800 Series
Long Range: Yes
Detection: Probe or built-in prongs
Also senses: None listed
Power: Battery

Pros

Probe or direct placement
800 Series
$28.95

Cons

Only 11 reviews
3.7 stars
Newer brand on Amazon

NEO

NEO Z-Wave Plus 700 Water Leak Sensor with Probe, Water Leak Detetor, Home Assistant & Hubitat, for Home Security, Instant alerts & App Notification; Requires a Z-Wave hub (not Included)

4.0 15 reviews

Score 56/100

$29.99

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A probe-style 700 Series sensor that names Home Assistant and Hubitat.

Z-Wave chip: 700 Series
Long Range: No
Detection: Probe
Also senses: None listed
Power: CR2 battery

Pros

Probe for hard-to-reach spots
Names Home Assistant and Hubitat
$29.99

Cons

Only 15 reviews
CR2 battery is less common
No Long Range

HomeSeer

HomeSeer Smart Water Leak Sensor (LS100 G8), 800 Series Long Range Z-Wave Technology, Compatible with HomeSeer, Hubitat, Smartthings & Home Assistant (1)

3.9 11 reviews

Score 55/100

$39.95

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A Long Range leak sensor from HomeSeer that names SmartThings, Hubitat, and Home Assistant.

Z-Wave chip: 800 Series
Long Range: Yes
Detection: Built-in
Also senses: Not listed
Power: Battery

Pros

800 Series Long Range
Lists HomeSeer, Hubitat, SmartThings, and Home Assistant
Sold by HomeSeer

Cons

Only 11 reviews
Thin listing
3.9 stars

Best Budget

Aeotec

Basic Version: Aeotec Water Sensor 7 Leak and Flood Detection, SmartThings Compatible, Z-Wave Plus, S2, SmartStart, ZWave hub Required

3.4 33 reviews

Score 53/100

$24.99

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The leak-only version of the Water Sensor 7, for $24.99.

Z-Wave chip: 700 Series
Long Range: No
Detection: 0.02 in. of water
Also senses: None listed
Power: Battery, about 3 years

Pros

$24.99
Detects as little as 0.02 in. of water
S2 and SmartStart

Cons

3.4 stars
Leak only, no temperature
No Long Range

Buyer's guide

Where should leak sensors go?

Anywhere water can appear without you seeing it: under sinks, behind the toilet, next to the water heater, under the dishwasher and washing machine, and near the sump pump. Put them flat on the floor where water would pool first.

Do I want a built-in alarm?

Yes, if the sensor might be your only warning. A loud local siren works even if your internet or hub is down. App and hub alerts are better when you're away.

How long do the batteries last?

Most battery sensors on these lists are rated for one to three years, depending on how often they report. Low-power radios like Zigbee, Z-Wave, and Thread last much longer than Wi-Fi.

Can a leak sensor shut off the water?

Not on its own. Paired with a smart water shut-off valve through your hub or app, it can close the main valve automatically when it detects a leak.

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Leak sensors on other protocols

Zigbee leak sensors →Wi-Fi leak sensors →Matter leak sensors →