Water Leak Sensors · Head to head

eufy Security Flood & Freeze Sensor E20 vs YoLink Water Leak Sensor 1

Full Smart Water Leak Sensors comparison in 2026

Updated October 2026
Data from the official Eufy and YoLink sites.
2026 verdict
For a leak sensor with its own siren and a probe that reaches under an appliance, the eufy Security Flood & Freeze Sensor E20 is the pick over the YoLink Water Leak Sensor 1, winning on sensing and on a loud local alarm.
eufy Security Flood & Freeze Sensor E20
Winner
eufy Security Flood & Freeze Sensor E20
$39.99
Buy on Amazon USA
The eufy Security Flood & Freeze Sensor E20 sounds a 75 dB buzzer and lights an LED when water bridges its pins, tucks a 1.2 m extension probe under a dishwasher or washing machine, watches for freezing with several temperature thresholds in the app, and runs about five years on a CR123A. The YoLink Water Leak Sensor 1 is the cheaper and better rated of the two and carries a two-year warranty, with IP68 sealing and LoRa reach through a YoLink hub, but it is silent and senses water only. Pick the eufy Security Flood & Freeze Sensor E20 for kitchens, laundry rooms and basements where you want to hear the alarm and catch a freeze, and the YoLink Water Leak Sensor 1 for quiet, long-range coverage at the lowest cost.
vs
YoLink Water Leak Sensor 1
YoLink
#6 Best Seller in Water Leak Sensors

YoLink Water Leak Sensor 1

24% OFF
Prime exclusive deal
$15.29
$19.99
Buy on Amazon USA

Also sold in packs

  • Pack of 315% OFF$42.29$49.99$14.10 per unitYou save $3.58Buy
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Featureeufy Security Flood & Freeze Sensor E20YoLink Water Leak Sensor 1Winner
Price$39.99$15.29YoLink Water Leak Sensor 1
Rating4.24.6YoLink Water Leak Sensor 1
Weather ResistanceIP54IP68YoLink Water Leak Sensor 1
SensorsWater Leak, TemperatureWater Leakeufy Security Flood & Freeze Sensor E20
AlertsWater Leak Alerts, Freeze Temperature Alerts, Low Battery AlertsWater Leak Alerts, Low Battery Alertseufy Security Flood & Freeze Sensor E20
On Device Alert SoundYESNOeufy Security Flood & Freeze Sensor E20
Battery Life5 years5 yearsTie
Connectivity2.4 GHz WiFiOtherTie
IntegrationsHome AssistantHome AssistantTie
On Device Alert LightYESYESTie

What the differences mean

Local alarm

The eufy Security Flood & Freeze Sensor E20 sounds a 75 dB buzzer and lights an LED when water hits both pins, so you can find the leak in the room. The YoLink Water Leak Sensor 1 is silent and only flashes a status light, so an audible warning needs an added siren.

What it senses

The eufy Security Flood & Freeze Sensor E20 reads water and watches for freezing against several temperature thresholds you set in the app. The YoLink Water Leak Sensor 1 senses water only, so freeze protection there needs a different YoLink model.

Probe or no probe

The eufy Security Flood & Freeze Sensor E20 ships with a 1.2 m extension probe, so it can watch a gap under an appliance where the body will not fit. The YoLink Water Leak Sensor 1 has no cable and detects water only where the puck sits.

Weather rating and battery

The YoLink Water Leak Sensor 1 is IP68 against the IP54 of the eufy Security Flood & Freeze Sensor E20, so the YoLink handles a soaking better. Both are rated around five years, on two AAA cells for the YoLink and a CR123A for the eufy.

The bridge it needs

The eufy Security Flood & Freeze Sensor E20 requires a compatible eufy HomeBase, with no radio of its own. The YoLink Water Leak Sensor 1 requires a YoLink hub. Each is an add-on to its own ecosystem rather than a standalone device.

Price

The YoLink Water Leak Sensor 1 is the cheaper and better rated of the two. The eufy Security Flood & Freeze Sensor E20 asks more for its buzzer, its extension probe and its freeze thresholds, so the extra is worth paying only if those are the things the room actually needs.

Which one to buy if

YoLink

YoLink Water Leak Sensor 1

24% OFF
Prime exclusive deal
$15.29
$19.99
Buy on Amazon USA
  • + Price: $15.29
  • + Rating: 4.6
  • + Weather Resistance: IP68
  • - Sensors: Water Leak vs Water Leak, Temperature
  • - Alerts: Water Leak Alerts, Low Battery Alerts vs Water Leak Alerts, Freeze Temperature Alerts, Low Battery Alerts

What owners say

Owner reviews of the YoLink Water Leak Sensor 1 keep returning to the same two strengths. Range is the first: owners report sensors staying connected from attics, basements, sump areas and outbuildings where Wi-Fi sensors drop, and one describes catching a leak after a single drop from a pipe joint. Alert speed is the second, with test drips triggering notifications within seconds by app, email and text and no subscription needed to unlock them. They also value the automation, since a leak paired to a YoLink shutoff valve closes the water main on its own and keeps working during an internet or power outage through Control-D2D. Setup is described as a few minutes of scanning QR codes. Their caveats follow from the spec sheet: the sensor is silent, so an audible alarm needs a YoLink siren or SpeakerHub, it has no temperature or freeze sensing, and it needs a YoLink hub.

Frequently Asked Questions

Which is better overall: the eufy Security Flood & Freeze Sensor E20 or the YoLink Water Leak Sensor 1?

Pick by what the room needs. The eufy Security Flood & Freeze Sensor E20 wins when a local siren, a probe under an appliance and freeze warnings matter, since it has all three. The YoLink Water Leak Sensor 1 is the better value for damp, distant or numerous water-only spots, with IP68 sealing, up to five years of battery and a two-year warranty.

What is the biggest difference between the eufy Security Flood & Freeze Sensor E20 and the YoLink Water Leak Sensor 1?

Alarm and sensing against sealing. The eufy Security Flood & Freeze Sensor E20 has a 75 dB buzzer, an extension probe and freeze thresholds, while the YoLink Water Leak Sensor 1 is a silent water-only sensor that is IP68 and lasts up to five years on a charge.

Does the YoLink Water Leak Sensor 1 have a local alarm?

No. The YoLink Water Leak Sensor 1 is silent by design and only flashes a status LED, so hearing an alert in the house needs a YoLink siren or SpeakerHub. The eufy Security Flood & Freeze Sensor E20, by contrast, has a 75 dB buzzer on the unit.

Do these sensors need their own hub?

Yes, each needs its brand's hub. The eufy Security Flood & Freeze Sensor E20 requires a compatible eufy HomeBase, and the YoLink Water Leak Sensor 1 requires a YoLink hub. Neither is a standalone Wi-Fi sensor.

Which one handles water better?

The YoLink Water Leak Sensor 1, which is IP68 and can be submerged and reused once dried. The eufy Security Flood & Freeze Sensor E20 is IP54, enough for a damp utility space but not for being soaked.

Who should buy the eufy Security Flood & Freeze Sensor E20, and who should buy the YoLink Water Leak Sensor 1?

Buy the eufy Security Flood & Freeze Sensor E20 for a kitchen, laundry or basement where you want to hear the alarm and need a probe under an appliance. Buy the YoLink Water Leak Sensor 1 for quiet, long-range coverage across many spots at a lower cost.

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