The Best Zigbee Water Leak Sensors

Cheap Zigbee leak sensors, many with built-in alarms, ranked.

We pulled the Zigbee water leak sensors selling on Amazon and scored them on rating, review volume, and features: built-in sirens, sensing cables, and open Zigbee 3.0 pairing.

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

Our picks

Best Overall

SONOFF

SONOFF SNZB-05P

4.5 (406)

4.5 stars, a 5-year battery, drip detection, and an optional sensing cable.

4.0 (42)

$13.99 with a 3-year battery, and it pairs straight to Echo hubs.

THIRDREALITY Zigbee leak sensor

4.1 (351)

A 120 dB siren right at the leak, plus app and email alerts.

Aeotec SmartThings Water Leak Sensor

4.5 (525)

SmartThings' own leak sensor, with temperature and the best rating here.

$39.99

View on Amazon →

Side-by-side

Swipe the table sideways to see every column.

#	Sensor	Price	Rating	Reviews	Siren	Battery	Hub	Extras	Score
1	Aeotec SmartThings Water Leak Sensor	$39.99	4.5	525	Light-up or siren alerts	Battery	SmartThings or other Zigbee hubs	Temperature	81
2	SONOFF SNZB-05P	$24.99	4.5	406	Through your hub	CR2477, up to 5 years	Zigbee hub	Drip detection, optional cable	78
3	THIRDREALITY Zigbee leak sensor	$20.99	4.1	351	120 dB	Not listed	Zigbee hub or Echo with Zigbee	Drip detection	76
4	SONOFF SNZB-05P with cable	$22.90	4.4	199	Through your hub	CR2477, up to 5 years	Zigbee hub	Sensing cable included	75
5	Aqara Water Leak Sensor	$17.99	4.2	3,646	Through Aqara hub	Not listed	Aqara hub only	Detects 0.5 mm of water	67
6	THIRDREALITY WL2	$13.99	4.0	42	None listed	Up to 3 years	Zigbee 3.0 hub or Echo with Zigbee	Drip detection	66
7	Haozee Zigbee water detector	$14.99	4.4	9	110 dB	Not listed	Zigbee hub, Home Assistant, Zigbee2MQTT	Event log	65
8	Centralite Water Sensor	$19.95	3.8	150	None listed	Battery, pre-installed	Zigbee hub	Pull-to-pair	61
✕	Tuya (Toyanc) Zigbee leak sensor with alarm	$19.99	4.0	2	"Built-in alarm" is only 55 dB				AVOID

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 for SmartThings

Aeotec

Aeotec SmartThings SmartThings Water Leak Sensor, ZigBee, Battery Powered, Smart Home Hub Compatible

4.5 525 reviews

Score 81/100

$39.99

Check price on Amazon

100+ bought in past month

SmartThings' official leak sensor, with temperature monitoring and the best rating here.

Hub: SmartThings or other Zigbee hubs
Built-in siren: Light-up or siren alerts
Battery: Battery
Extras: Temperature
Any Zigbee hub: Yes

Pros

4.5 stars from 525 reviews
Temperature monitoring
Can trigger water shut-off through your hub

Cons

$39.99
Battery life isn't listed
Operating range 32-104°F

Best Overall

SONOFF

SONOFF SNZB-05P Zigbee Water Leak Sensor for Alarm System and Smart Home Automation, Wireless Mini Flood Detector for Kitchen Bathroom Basement 1Pack

4.5 406 reviews

Score 78/100

$24.99

Check price on Amazon

100+ bought in past month

The Zigbee leak sensor to buy: well rated, long battery life, and it catches drips.

Hub: Zigbee hub
Built-in siren: Through your hub
Battery: CR2477, up to 5 years
Extras: Drip detection, optional cable
Any Zigbee hub: Yes

Pros

4.5 stars from 406 reviews
Up to 5-year battery
Detects drips as well as pooling water
Optional sensing cable

Cons

No built-in siren; alarms come from your hub
Needs a Zigbee hub
Sold by the brand

Best with Alarm

THIRDREALITY

THIRDREALITY Zigbee Water Leak Sensor with Dripping Detection,120dB Alarm,App Notifications Enabled When Work with Home Assistant and Compatible Zigbee HUB Like SmartThings,Aeotec or Third Reality Hub

4.1 351 reviews

Score 76/100

$20.99

Check price on Amazon

100+ bought in past month

A leak sensor with its own 120 dB siren, so you hear it even with the internet down.

Hub: Zigbee hub or Echo with Zigbee
Built-in siren: 120 dB
Battery: Not listed
Extras: Drip detection
Any Zigbee hub: Yes

Pros

120 dB built-in siren
Drip detection
App and email alerts
351 reviews

Cons

4.1 stars
Battery life isn't listed
Bigger than coin-cell sensors

SONOFF

SONOFF SNZB-05P Zigbee Water Leak Sensor with Detection Cable for Alarm System and Smart Home Automation, Wireless Mini Flood Detector for Kitchen Bathroom Basement 1Pack

4.4 199 reviews

Score 75/100

$22.90

Check price on Amazon

100+ bought in past month

The same sensor with a detection cable for covering a long stretch, like behind a water heater.

Hub: Zigbee hub
Built-in siren: Through your hub
Battery: CR2477, up to 5 years
Extras: Sensing cable included
Any Zigbee hub: Yes

Pros

Sensing cable covers more floor
5-year battery
$22.90

Cons

No built-in siren
199 reviews
Needs a Zigbee hub

Aqara

Aqara Water Leak Sensor 1 Pack, Zigbee Water Leak Detector for Alarm System

4.2 3,646 reviews

Score 67/100

$17.99

Check price on Amazon

The most-reviewed Zigbee leak sensor, for Aqara homes.

Hub: Aqara hub only
Built-in siren: Through Aqara hub
Battery: Not listed
Extras: Detects 0.5 mm of water
Any Zigbee hub: No

Pros

3,646 reviews
Detects 0.5 mm of water
Apple Home, Alexa, and Google through the Aqara hub

Cons

"Not compatible with hubs from other brands", per the listing
Keep within about 33 ft of the hub
No built-in siren

Best Budget

THIRDREALITY

THIRDREALITY Zigbee Water Leak Sensor WL2 with Dripping & Leaking Detection, App Notifications, Zigbee Hub Needed, 3-Year Battery Life, No Battery & Srien, Support Home Assistant, SmartThings, Homey

4.0 42 reviews

Score 66/100

$13.99

Check price on Amazon

50+ bought in past month

ThirdReality's newer, cheaper sensor with a 3-year battery.

Hub: Zigbee 3.0 hub or Echo with Zigbee
Built-in siren: None listed
Battery: Up to 3 years
Extras: Drip detection
Any Zigbee hub: Yes

Pros

$13.99
Up to 3-year battery
Pairs with Echo (4th gen) and other Zigbee hubs

Cons

Only 42 reviews
No siren listed
Needs a Zigbee hub

Haozee

Haozee Zigbee Water Detector with 110 dB Siren Alarm, Wireless Water Sensor

4.4 9 reviews

Score 65/100

$14.99

Check price on Amazon

A cheap sensor with a 110 dB siren and Home Assistant support named in the listing.

Hub: Zigbee hub, Home Assistant, Zigbee2MQTT
Built-in siren: 110 dB
Battery: Not listed
Extras: Event log
Any Zigbee hub: Yes

Pros

110 dB siren
$14.99
Home Assistant and Zigbee2MQTT

Cons

Only 9 reviews
Battery life isn't listed
Sold by the brand

Centralite

Centralite Centralite by Ezlo Water Sensor | Monitors Your Whole Home for Leaks | Detects Water Leaks in a Kitchen, Bathroom, Basement or Laundry Room | Zigbee Smart Water Sensor

3.8 150 reviews

Score 61/100

$19.95

Check price on Amazon

A simple leak sensor with pull-tab pairing. Works on any non-conductive floor.

Hub: Zigbee hub
Built-in siren: None listed
Battery: Battery, pre-installed
Extras: Pull-to-pair
Any Zigbee hub: Yes

Pros

Pull-tab pairing
$19.95
Battery pre-installed

Cons

3.8 stars
Needs a non-conductive surface
No siren

The one to avoid

This sensor turns up in the search results but has problems serious enough that we'd keep looking.

✕ Avoid

Tuya (Toyanc)

Tuya ZigBee Smart Water Leak Sensor with Built-in Alarm, IP54 Water-Resistant Flood Detector, App Notification & Remote Monitoring, Compatible with Alexa & Google Home (ZigBee Hub Required)

4.0 2 reviews · $19.99

The title sells a built-in alarm, but the listing puts it at 55 dB, about as loud as normal conversation.

Why we'd skip it

A 55 dB alert is unlikely to be heard from another room, let alone another floor.
The ThirdReality and Haozee sensors above have 120 dB and 110 dB sirens for similar money.
Only 2 reviews, sold by a small reseller.

See the listing on Amazon (so you recognize it)

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.

More Zigbee reviews

Zigbee light switches →Zigbee dimmers →Zigbee smart plugs →Zigbee bulbs →Zigbee door and window sensors →Zigbee motion sensors →Zigbee smart locks →

Leak sensors on other protocols

Z-Wave leak sensors →Wi-Fi leak sensors →Matter leak sensors →