Meross Smart Water Leak Sensor, MS405HK — 100 dB Alerts, IP66 Protection. Stop leaks before they become disasters with an app-connected detector for kitchens, basements, and laundry rooms. Dual-side probes catch slow drips and burst pipes, while hub-backed 433 MHz keeps alerts reliable across your home.

Hub required: Works with Meross Smart Hub MSH400HK. Not included.
Loud safety: 100 dB dual alarm (sensor + hub)
Real-time notifications: App alerts with 2-year incident log/export
Broad compatibility: Apple Home, Alexa, Google, SmartThings
Long life: 2×AAA included; 3+ years typical
Rugged build: IP66 waterproof shell
Extended range: Up to 100 m SubG 433 MHz link

Meross Smart Water Leak Sensor, MS405HK — 100 dB protection, App alerts & IP66 resistance

Stop water leaks before they start

Catch leaks before they cause expensive damage. The MS405HK from Meross combines precise dual-sided probes, a loud 100 dB alarm, and smart notifications via a hub to protect kitchens, bathrooms, basements, and under-sink areas — 24/7.

Meross Smart Water Leak Sensor MS405HK (EU version)

Name: Meross Smart Water Leak Sensor MS405HK (EU version)
Brand: Meross

MKD 1,690.00

Sales Tax Included

Quantity

Why you will love it

From drops to bursts: Top and bottom probes detect puddles, rising water, slow seepage, and sudden pipe failures.

You will hear the alert: Dual alarm up to 100 dB (sensor + hub) will wake even a heavy sleeper and notify the whole household.

Peace of mind in real-time: Instant in-app notifications, a 2-year incident timeline, and exportable logs for insurance or maintenance.

Ready for the smart home: Works with Apple Home, Alexa, Google Assistant, and SmartThings (via Meross hub).

Built to last: IP66 protected housing to handle splashing and standing water; 2× AAA batteries (included) with typical 3+ years of battery life.

Whole-home coverage: Up to 100 m via Sub-G 433 MHz (via hub) — more robust than standard Wi-Fi or Zigbee/Thread in challenging locations.

Eye-catching automations: Create colorful light alerts (e.g., red lights) for immediate warning.

Ideal for:

Basements, storage rooms, laundry rooms, kitchens, bathrooms

Under the sink, near water heaters, pumps, and AC drip pans

Second homes and rentals that require reliable remote notifications

Setup and Compatibility

Hub Options: Pairs with the Meross Smart Hub MSH400HK (also compatible with MSH300) for app notifications, logs, voice assistants, and dual siren.

Standalone Version: This version ships without the hub; the sensor's local alarm works independently. Add a hub for notifications and integrations.
Technical Specifications - Meross Smart Water Leak Sensor

Battery: 2 × AAA (included), replaceable; typical lifespan > 3 years

Alarm Volume: up to 100 dB (sensor); hub adds a second 100 dB siren

Wireless Standard: Sub-G 433 MHz (sensor <—> Meross hub)

Range: up to 100 m (open space; actual range depends on the environment)

Platforms (via hub): Apple Home, Amazon Alexa, Google Assistant, SmartThings

Dimensions (W × D × H): 63 × 63 × 27 mm

Protection: IP66 dustproof & waterproof design

Sensing: Top and bottom probes for multi-surface detection

Operating Temperature: 0–40 °C (32–104 °F)

Storage Temperature: −20–50 °C (−4–122 °F)

Humidity: Operating 10–90 % RH non-condensing; storage 5–90 % RH non-condensing

Certifications: US: FCC | EU: CE, RoHS, WEEE

Package Contents: 1 × Smart Water Leak Sensor (MS405HK), 2 × AAA batteries (pre-installed), 1 × User Manual

Requirements: Smartphone with iOS 13+ or Android 8.0+, Existing 2.4 GHz Wi-Fi (for hub connection), Meross Smart Hub (MSH400HK/MSH300) for app alerts, logging, voice control, and dual alarm

Notes: Place sensors in high-risk areas (pipe joints, under appliances, under the sink). Use multiple units for wider coverage. Automations (e.g., colored lights) require compatible lighting and integrations via the hub.

Meross Smart Water Leak Sensor MS405HK (EU version)

Product Specifications

Technical Specifications

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