Option 1 · Eufy
eufy Security Flood & Freeze Sensor E20
Last updated October 2026
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eufy Security Flood & Freeze Sensor E20 vs X-Sense Wi-Fi Water Leak Detector
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Key differences between eufy Security Flood & Freeze Sensor E20 and X-Sense Wi-Fi Water Leak Detector
A summary of selected recorded differences between these water leak sensors. Check the full specification table below for details and conditions.
Feature differences among your selected devices
- Freeze Temperature Alerts (alerts): eufy Security Flood & Freeze Sensor E20 — Yes; X-Sense Wi-Fi Water Leak Detector — No.
- Automations (features): eufy Security Flood & Freeze Sensor E20 — Yes (Works inside the eufy Security / HomeBase automation set once paired.); X-Sense Wi-Fi Water Leak Detector — No.
- On Device Alert Light (features): eufy Security Flood & Freeze Sensor E20 — Yes (LED: blinking blue in pairing, solid blue for 5 seconds on success, red blinks with the buzzer when triggered.); X-Sense Wi-Fi Water Leak Detector — No.
- Sensor Cable (included accessories): eufy Security Flood & Freeze Sensor E20 — Yes (Includes a 1.2 m (3.9 ft) extension probe, less than 0.5 cm thick, for tight spaces under appliances.); X-Sense Wi-Fi Water Leak Detector — No.
Specifications to check side by side
- 2.4 GHz Wi-Fi (connectivity): eufy Security Flood & Freeze Sensor E20 — HomeBase required (Sub-1G radio to a US HomeBase (Mini v4.0.5.2 or above, HomeBase 2 after 2021, HomeBase 3, or HomeBase Pro). Wi-Fi lives on the HomeBase, not on the sensor.); X-Sense Wi-Fi Water Leak Detector — No.
- Other (connectivity): eufy Security Flood & Freeze Sensor E20 — No; X-Sense Wi-Fi Water Leak Detector — Sub-1G (SBS50 Base Station required) (The SWS51 detector links to the X-Sense SBS50 base station over 915 MHz (US) / 868 MHz (EU), up to 1,640 ft (500 m) in open air; the base station carries the 2.4 GHz Wi-Fi connection (802.11b/g/n)).
- Battery Life (power): eufy Security Flood & Freeze Sensor E20 — 5 years; X-Sense Wi-Fi Water Leak Detector — 3 years.
- Battery Type (power): eufy Security Flood & Freeze Sensor E20 — CR123A; X-Sense Wi-Fi Water Leak Detector — 2x AAA.
These observations are derived from recorded catalog data and have not all been independently verified. Confirm details with the manufacturer before purchasing.
Compare capabilities, compatibility and setup requirements.
Option 2 · X-Sense
X-Sense Wi-Fi Water Leak Detector
Last updated October 2026
View full device profileWhat the catalog tells us
Understand the tradeoffs.
These counts describe the available data, not a quality score. More features do not automatically make a better device.
9differences with recorded values for every device
0rows with missing or unspecified information
Consider your setup
Battery Life
- eufy Security Flood & Freeze Sensor E205 years
- X-Sense Wi-Fi Water Leak Detector3 years
Compare the stated test conditions. Catalog battery figures alone do not predict runtime in your home.
Inspect the specificationsYour priorities, side by side
Focus on what changes.
Mark the specifications you care about. Open manufacturer sources for verification scope; fields without citations remain catalog data. Expand notes for other qualifications.
Showing 28 of 28 rows. “Not recorded” does not mean “No”.
Alerts
- eufy Security Flood & Freeze Sensor E20
- Yes
- X-Sense Wi-Fi Water Leak Detector
- No
- eufy Security Flood & Freeze Sensor E20
- Yes
Catalog note
The LED flashes red every 60 seconds when the CR123A is low.
- X-Sense Wi-Fi Water Leak Detector
- Yes
- eufy Security Flood & Freeze Sensor E20
- No
- X-Sense Wi-Fi Water Leak Detector
- No
- eufy Security Flood & Freeze Sensor E20
- No
- X-Sense Wi-Fi Water Leak Detector
- No
- eufy Security Flood & Freeze Sensor E20
- Yes
Catalog note
Push notifications through the eufy app once the sensor is paired to a HomeBase, plus a 75 dB local buzzer.
- X-Sense Wi-Fi Water Leak Detector
- Yes
Connectivity
- eufy Security Flood & Freeze Sensor E20
- HomeBase required
Catalog note
Sub-1G radio to a US HomeBase (Mini v4.0.5.2 or above, HomeBase 2 after 2021, HomeBase 3, or HomeBase Pro). Wi-Fi lives on the HomeBase, not on the sensor.
- X-Sense Wi-Fi Water Leak Detector
- No
- eufy Security Flood & Freeze Sensor E20
- No
- X-Sense Wi-Fi Water Leak Detector
- No
- eufy Security Flood & Freeze Sensor E20
- No
- X-Sense Wi-Fi Water Leak Detector
- No
- eufy Security Flood & Freeze Sensor E20
- No
- X-Sense Wi-Fi Water Leak Detector
- Sub-1G (SBS50 Base Station required)
Catalog note
The SWS51 detector links to the X-Sense SBS50 base station over 915 MHz (US) / 868 MHz (EU), up to 1,640 ft (500 m) in open air; the base station carries the 2.4 GHz Wi-Fi connection (802.11b/g/n)
- eufy Security Flood & Freeze Sensor E20
- No
- X-Sense Wi-Fi Water Leak Detector
- No
- eufy Security Flood & Freeze Sensor E20
- No
- X-Sense Wi-Fi Water Leak Detector
- No
- eufy Security Flood & Freeze Sensor E20
- No
- X-Sense Wi-Fi Water Leak Detector
- No
Features
- eufy Security Flood & Freeze Sensor E20
- Yes
Catalog note
Works inside the eufy Security / HomeBase automation set once paired.
- X-Sense Wi-Fi Water Leak Detector
- No
- eufy Security Flood & Freeze Sensor E20
- Yes
Catalog note
LED: blinking blue in pairing, solid blue for 5 seconds on success, red blinks with the buzzer when triggered.
- X-Sense Wi-Fi Water Leak Detector
- No
- eufy Security Flood & Freeze Sensor E20
- Yes
Catalog note
75 dB buzzer at 10 cm when a leak is detected.
- X-Sense Wi-Fi Water Leak Detector
- Yes
Catalog note
110 dB on the detector (the SBS50 base station alarm is 100 dB)
Included Accessories
- eufy Security Flood & Freeze Sensor E20
- Yes
Catalog note
Includes a 1.2 m (3.9 ft) extension probe, less than 0.5 cm thick, for tight spaces under appliances.
- X-Sense Wi-Fi Water Leak Detector
- No
Integrations
- eufy Security Flood & Freeze Sensor E20
- No
Catalog note
Alexa has no water leak sensor type: the Matter Water Leak Detector has no Alexa capability mapping, and bridges such as SmartThings or Home Assistant cannot expose a moisture sensor either
- X-Sense Wi-Fi Water Leak Detector
- No
Catalog note
Alexa has no water leak sensor type: the Matter Water Leak Detector has no Alexa capability mapping, and bridges such as SmartThings or Home Assistant cannot expose a moisture sensor either
- eufy Security Flood & Freeze Sensor E20
- No
- X-Sense Wi-Fi Water Leak Detector
- No
- eufy Security Flood & Freeze Sensor E20
- No
- X-Sense Wi-Fi Water Leak Detector
- No
- eufy Security Flood & Freeze Sensor E20
- Yes
Catalog note
Community eufy Security integration for Home Assistant (HACS), which connects the eufy Security account and covers HomeBase sensors.
- X-Sense Wi-Fi Water Leak Detector
- Yes
Catalog note
Community X-Sense integration for Home Assistant (HACS), which lists this model and reads it from the X-Sense cloud account
- eufy Security Flood & Freeze Sensor E20
- No
- X-Sense Wi-Fi Water Leak Detector
- No
- eufy Security Flood & Freeze Sensor E20
- No
- X-Sense Wi-Fi Water Leak Detector
- No
Power
- eufy Security Flood & Freeze Sensor E20
- 5 years
- X-Sense Wi-Fi Water Leak Detector
- 3 years
- eufy Security Flood & Freeze Sensor E20
- CR123A
- X-Sense Wi-Fi Water Leak Detector
- 2x AAA
- eufy Security Flood & Freeze Sensor E20
- No
- X-Sense Wi-Fi Water Leak Detector
- No
Sensors
- eufy Security Flood & Freeze Sensor E20
- Low Temperatures
Catalog note
Freeze alarm below 4 C / 39.2 F, with five alarm thresholds in the app: 32, 33, 35, 37 and 40 F.
- X-Sense Wi-Fi Water Leak Detector
- No
- eufy Security Flood & Freeze Sensor E20
- No
- X-Sense Wi-Fi Water Leak Detector
- No
- eufy Security Flood & Freeze Sensor E20
- Yes
- X-Sense Wi-Fi Water Leak Detector
- Yes
Catalog note
4 bottom sensor probes and 2 top sensor probes to detect water leaks and floods, providing an early warning of water damage; suitable for kitchens, bathrooms, basements, and more
| Specification | eufy Security Flood & Freeze Sensor E20 | X-Sense Wi-Fi Water Leak Detector |
|---|---|---|
| Alerts | ||
| Yes | No | |
YesCatalog noteThe LED flashes red every 60 seconds when the CR123A is low. | Yes | |
| No | No | |
| No | No | |
YesCatalog notePush notifications through the eufy app once the sensor is paired to a HomeBase, plus a 75 dB local buzzer. | Yes | |
| Connectivity | ||
HomeBase requiredCatalog noteSub-1G radio to a US HomeBase (Mini v4.0.5.2 or above, HomeBase 2 after 2021, HomeBase 3, or HomeBase Pro). Wi-Fi lives on the HomeBase, not on the sensor. | No | |
| No | No | |
| No | No | |
| No | Sub-1G (SBS50 Base Station required)Catalog noteThe SWS51 detector links to the X-Sense SBS50 base station over 915 MHz (US) / 868 MHz (EU), up to 1,640 ft (500 m) in open air; the base station carries the 2.4 GHz Wi-Fi connection (802.11b/g/n) | |
| No | No | |
| No | No | |
| No | No | |
| Features | ||
YesCatalog noteWorks inside the eufy Security / HomeBase automation set once paired. | No | |
YesCatalog noteLED: blinking blue in pairing, solid blue for 5 seconds on success, red blinks with the buzzer when triggered. | No | |
YesCatalog note75 dB buzzer at 10 cm when a leak is detected. | YesCatalog note110 dB on the detector (the SBS50 base station alarm is 100 dB) | |
| Included Accessories | ||
YesCatalog noteIncludes a 1.2 m (3.9 ft) extension probe, less than 0.5 cm thick, for tight spaces under appliances. | No | |
| Integrations | ||
NoCatalog noteAlexa has no water leak sensor type: the Matter Water Leak Detector has no Alexa capability mapping, and bridges such as SmartThings or Home Assistant cannot expose a moisture sensor either | NoCatalog noteAlexa has no water leak sensor type: the Matter Water Leak Detector has no Alexa capability mapping, and bridges such as SmartThings or Home Assistant cannot expose a moisture sensor either | |
| No | No | |
| No | No | |
YesCatalog noteCommunity eufy Security integration for Home Assistant (HACS), which connects the eufy Security account and covers HomeBase sensors. | YesCatalog noteCommunity X-Sense integration for Home Assistant (HACS), which lists this model and reads it from the X-Sense cloud account | |
| No | No | |
| No | No | |
| Power | ||
| 5 years | 3 years | |
| CR123A | 2x AAA | |
| No | No | |
| Sensors | ||
Low TemperaturesCatalog noteFreeze alarm below 4 C / 39.2 F, with five alarm thresholds in the app: 32, 33, 35, 37 and 40 F. | No | |
| No | No | |
| Yes | YesCatalog note4 bottom sensor probes and 2 top sensor probes to detect water leaks and floods, providing an early warning of water damage; suitable for kitchens, bathrooms, basements, and more | |
Know what’s behind the comparison.
The table matches specifications by section and field. It preserves notes, separates missing data from explicit “No” values, and keeps qualifications attached to their values. No overall winner is assigned from feature counts.
Read our comparison methodology