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Water Leak Sensors · Head to head

Aeotec Water Sensor 7 Pro vs Eve Water Guard

Full Smart Water Leak Sensors comparison in 2026

Updated September 2026
Data from Amazon and official Aeotec and Eve sites.
2026 verdict
As a water leak sensor for a HomeKit household, the Eve Water Guard is the better buy over the Aeotec Water Sensor 7 Pro.
Eve Water Guard
Winner
Eve Water Guard
$109.95
Buy on Amazon USACheck price
It carries a higher owner rating, a weatherproof wired design, a 100dB onboard siren with an alert light, and Thread connectivity the Aeotec cannot match. Its standout is a 6.5 ft sensing cable, extendable up to 490 ft, so one unit can watch an entire kitchen or laundry run instead of a single spot. The Aeotec Water Sensor 7 Pro pushes back where it counts for automation buyers on a budget: it costs less, adds a temperature sensor with freeze-temperature alerts the leak-only Eve lacks entirely, and runs on a battery rather than needing a wall outlet nearby. Choose the Eve Water Guard for HomeKit or Thread setups that want long-run cable coverage and a loud built-in alarm; pick the Aeotec Water Sensor 7 Pro for cheaper, battery-powered Z-Wave monitoring that also flags a freezing pipe.
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FeatureAeotec Water Sensor 7 ProEve Water GuardWinner
Price$29.99$109.95Aeotec Water Sensor 7 Pro
Rating4.14.5Eve Water Guard
Weather ResistanceIP20YESEve Water Guard
ConnectivityZ-WaveBluetooth, Thread ProtocolEve Water Guard
SensorsWater Leak, TemperatureWater LeakAeotec Water Sensor 7 Pro
AlertsWater Leak Alerts, Temperature Alerts, Freeze Temperature AlertsWater Leak AlertsAeotec Water Sensor 7 Pro
On Device Alert SoundNOYESEve Water Guard
On Device Alert LightNOYESEve Water Guard
Warranty1 year1 yearTie
IntegrationsSamsung SmartThings, Home AssistantApple HomeKit, Home AssistantTie

What the differences mean

How much ground each one covers

The Eve Water Guard ships with a 6.5 ft sensing cable that itself acts as the sensor, extendable up to about 490 ft to trace behind a whole appliance run. The Aeotec Water Sensor 7 Pro's included cable is built for one fixture, a water heater or a pipe joint, not a long run.

Power

The Eve Water Guard plugs into a wall outlet for constant power, so there is no battery to replace but it needs to sit near an outlet. The Aeotec Water Sensor 7 Pro runs on a single battery rated for about three years, which frees up where it can be placed.

Platform support

The Eve Water Guard is native to Apple HomeKit and Thread, with Matter support planned. The Aeotec Water Sensor 7 Pro has no Apple Home path at all; it needs a Z-Wave hub to reach Samsung SmartThings or Home Assistant.

On-device alarm

The Eve Water Guard sounds a 100dB siren and lights an alert on the device itself. The Aeotec Water Sensor 7 Pro has no on-device alert sound or light of its own.

Temperature and freeze sensing

The Aeotec Water Sensor 7 Pro also reads temperature and sends freeze-temperature alerts, useful for a pipe in an unheated space. The Eve Water Guard is a dedicated leak sensor with no temperature monitoring at all.

Which one to buy if

What owners say

Eve Water Guard owners describe setup as scan-and-add, with automations built straight into the Apple Home app rather than a separate manufacturer account, and several specifically credit the alarm with catching a failed toilet flapper or a washing machine drip in time. Their main hesitation is price, more than one calls it expensive next to a spot sensor, though most say the coverage is worth it. Aeotec Water Sensor 7 Pro owners value getting close to three years out of a single battery and a spec sheet that covers both a leak and a freezing pipe for not much money, with several running it on a sump pump or a water heater through SmartThings or Home Assistant. Their recurring complaint, beyond the setup some hubs demand before pairing settles in, is that a handful of long-term owners in consistently damp placements report the probe corroding after months of exposure.

Price history compared

Every price change of both, in the same store, so the gap between the two lines is what one costs more than the other.

  • Aeotec Water Sensor 7 Pro
  • Eve Water Guard

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Frequently Asked Questions

Which is better overall: Aeotec Water Sensor 7 Pro or Eve Water Guard?

The Eve Water Guard wins overall on its higher rating, an extendable sensing cable, weatherproofing, and a 100dB onboard siren, best suited to HomeKit and Thread homes. The Aeotec Water Sensor 7 Pro is cheaper and adds temperature and freeze alerts on battery power.

What are the specs of the Aeotec Water Sensor 7 Pro?

It is a Z-Wave leak sensor with a bundled probe cable, a built-in temperature sensor with freeze-temperature alerts, and a single ER14250 battery rated for about three years. It needs a Z-Wave hub such as SmartThings or Home Assistant and has no Wi-Fi, Zigbee, Bluetooth or Apple Home support.

What is the biggest difference between these two sensors?

Coverage and power. The Eve Water Guard uses a wired sensing cable that extends up to 490 ft and a loud onboard siren, while the Aeotec Water Sensor 7 Pro is a battery-powered Z-Wave spot sensor that adds temperature and freeze alerts.

Which one covers a larger area?

The Eve Water Guard, thanks to a 6.5 ft sensing cable that extends up to about 490 ft to monitor a full appliance run. The Aeotec Water Sensor 7 Pro's shorter included cable detects near the fixture it is attached to.

Who should buy the Eve Water Guard?

Buy it if you run Apple HomeKit or Thread, want a single sensor to cover a long run behind appliances via its extendable cable, and value a loud onboard siren.

Who should buy the Aeotec Water Sensor 7 Pro?

Choose it if you want a cheaper, battery-powered Z-Wave sensor for SmartThings or Home Assistant that also flags temperature and freezing conditions.

Full comparison table

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