---
product_id: 527902536
title: "Meross Smart Water Leak Detector, WiFi Water Sensor Support Apple HomeKit, SmartThings, IP67 Waterproof with App Alerts, Audio Alarm, 100M Range for Home Basement Kitchen (Meross Hub Included)"
brand: "meross"
price: "HK$289"
currency: HKD
in_stock: true
reviews_count: 8
url: https://www.desertcart.hk/products/527902536-meross-smart-water-leak-detector-wifi-water-sensor-support-apple
store_origin: HK
region: Hong Kong
---

# 0.5mm ultra-sensitive leak detection 100M ultra-stable range IP67 waterproof & dustproof Meross Smart Water Leak Detector, WiFi Water Sensor Support Apple HomeKit, SmartThings, IP67 Waterproof with App Alerts, Audio Alarm, 100M Range for Home Basement Kitchen (Meross Hub Included)

**Brand:** meross
**Price:** HK$289
**Availability:** ✅ In Stock

## Summary

> 💧 Stay dry, stay smart — protect your home with precision and power!

## Quick Answers

- **What is this?** Meross Smart Water Leak Detector, WiFi Water Sensor Support Apple HomeKit, SmartThings, IP67 Waterproof with App Alerts, Audio Alarm, 100M Range for Home Basement Kitchen (Meross Hub Included) by meross
- **How much does it cost?** HK$289 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/527902536-meross-smart-water-leak-detector-wifi-water-sensor-support-apple)

## Best For

- meross enthusiasts

## Why This Product

- Trusted meross brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Durable IP67 Protection:** Fully waterproof and dustproof design built to thrive in humid, harsh environments.
- • **Robust 100M Wireless Range:** SubG tech delivers 3X stronger signal to cover basements and distant spots.
- • **Unmatched Leak Sensitivity:** Detects water presence at a microscopic 0.5mm threshold—never miss a drip.
- • **Long-lasting & Low Maintenance:** 18+ months battery life with included CR123A lithium battery for worry-free monitoring.
- • **Seamless Smart Home Integration:** Effortlessly sync with Apple HomeKit & SmartThings for total water leak control.

## Overview

The Meross Smart Water Leak Detector offers professional-grade water leak detection with ultra-sensitive 0.5mm probes, IP67 waterproof durability, and a powerful 100-meter wireless range using SubG technology. Compatible with Apple HomeKit and SmartThings, it enables remote monitoring and automation, including real-time app alerts and audible alarms. The included hub supports up to 16 devices, ensuring comprehensive home protection with minimal maintenance thanks to an 18+ month battery life.

## Description

Meross Smart Water Leak Detector, WiFi Water Sensor Support Apple HomeKit, SmartThings, IP67 Waterproof with App Alerts, Audio Alarm, 100M Range for Home Basement Kitchen (Meross Hub Included)

## Features

- Remote Monitoring & Automation: Compatible with Apple HomeKit (with HomeKit bridge, home WiFi stay online), and SmartThings, easy to set up, monitor water leaks remotely. Set triggers to control other Meross devices in the Meross app. For example, if water leakage is detected in the kitchen, Meross smart plug will auto turned off.
- IP67 Waterproof: Fully sealed IP67 waterproof and dustproof design, works well in high humidity environment, no rust, no short circuit, high sensitivity, no false alarm. Made of advanced nickel-plated carbon steel material, the water level detector alerts and stays in place when the water level rises beyond.
- Real-time Alert & Precise Detection: Equipped with sensitive probes, the water level threshold is Only 0.5mm. Water leakage activates a real-time local audible and visual alarm, and phone app notifications.
- 100M/328ft Transmission Distance: With SubG Wireless technology, 3X stronger and more stable signal transmission than WiFi and ZigBee/Thread Range, the sensor can effectively monitor water leakage even in the basement.
- Superb Versatility: One hub can control up to 16 Meross devices (sensors, plugs, bulbs, thermostat valves. etc.); Low-power consumption (18+ months battery life); Check data anytime or export them out via the Free Meross app. etc.
- Multi-scene: Mini size, Meross water leak detector can be used for Kitchen, Bathroom, Bathroom, etc, providing all-round protection.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Battery Description | Lithium |
| Number of Batteries | 1 CR123A batteries required. (included) |
| Voltage | 5 Volts (DC) |
| Control Method | App |
| Noise Level | 65 dB |
| Mounting Type | Plug-In Mount |
| Maximum Range | 100 Meters |
| Sensor Technology | Contact Sensor |
| Global Trade Identification Number | 06973696565235 |
| Manufacturer | meross |
| Part Number | MS400 |
| Item Weight | 7.4 ounces |
| Country of Origin | China |
| Item model number | MS400 |
| Batteries | 1 CR123A batteries required. (included) |
| Style | Sensor+Hub Kit |
| Material | Carbon Steel |
| Item Package Quantity | 1 |
| Cutting Diameter | 2.81 Inches |
| Certification | ip67 |
| Included Components | Batteries |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Lithium Manganese Dioxide |
| Description Pile | Lithium |
| Warranty Description | 1 year manufacturer |
| Assembled Diameter | 2.81 Inches |

## Product Details

- **Color:** white
- **Brand:** meross
- **Power Source:** Battery Powered
- **Compatible Devices:** Home Security System, Smartphone
- **Product Dimensions:** 5"L x 5"W x 5"H

## Images

![Meross Smart Water Leak Detector, WiFi Water Sensor Support Apple HomeKit, SmartThings, IP67 Waterproof with App Alerts, Audio Alarm, 100M Range for Home Basement Kitchen (Meross Hub Included) - Image 1](https://m.media-amazon.com/images/I/61KzjMCLGYL.jpg)
![Meross Smart Water Leak Detector, WiFi Water Sensor Support Apple HomeKit, SmartThings, IP67 Waterproof with App Alerts, Audio Alarm, 100M Range for Home Basement Kitchen (Meross Hub Included) - Image 2](https://m.media-amazon.com/images/I/61EfF+-3ZZL.jpg)
![Meross Smart Water Leak Detector, WiFi Water Sensor Support Apple HomeKit, SmartThings, IP67 Waterproof with App Alerts, Audio Alarm, 100M Range for Home Basement Kitchen (Meross Hub Included) - Image 3](https://m.media-amazon.com/images/I/61fPYqnHN+L.jpg)
![Meross Smart Water Leak Detector, WiFi Water Sensor Support Apple HomeKit, SmartThings, IP67 Waterproof with App Alerts, Audio Alarm, 100M Range for Home Basement Kitchen (Meross Hub Included) - Image 4](https://m.media-amazon.com/images/I/71Zx4pWLFAL.jpg)
![Meross Smart Water Leak Detector, WiFi Water Sensor Support Apple HomeKit, SmartThings, IP67 Waterproof with App Alerts, Audio Alarm, 100M Range for Home Basement Kitchen (Meross Hub Included) - Image 5](https://m.media-amazon.com/images/I/61PUAbThffL.jpg)

## Available Options

This product comes in different **Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Working as designed
*by S***I on December 5, 2024*

I was able to set up three sensors in a fairly short amount of time. It was best for me to setup in the Meross app first versus starting with Homekit. Meross app will ask you if you want to add to HomeKit and that worked great. The sensors by default are all labeled "leak" so best if you rename each on right way so you know which one is which. Also saw a video to just wet your two fingers to set up the sensors. The little wire thing Meross provides is to difficult to use and is not needed. Just use your fingers to touch the probes when it ask you to do that step. Note: When testing you will get critical alerts on everyones phones that are connected to your HomeKit home.

### ⭐⭐⭐⭐⭐ Easy to set up and great peace of mind
*by A***R on April 3, 2025*

Very easy to set up in the Meross app and get connected with HomeKit. Very cheap peace of mind

### ⭐⭐⭐⭐ Well made and performs well too
*by T***N on November 23, 2024*

Package contains a hub, usb power supply, and the dome shaped sensor. Setup in Apple Home (HomeKit) was painless. I triggered it a few times by setting it in the middle of a dinner plate and adding a small amount of water. It creates an immediate Critical notification in Apple Home, along with a flashing led and buzzer from the dome sensor.The sensors are solidly built and completely waterproof. The usb power cable is a little short, but the hub is light enough to be left dangling from an outlet behind an appliance or cabinet.My only complaint is sensor pricing. It's odd that the complete kit with sensor and required hub costs less than an extra sensor? I guess if I want another sensor, I'll just buy another whole kit? For now, I recommend just buying the (inexpensive) three pack up front.For those who have connection issues or complaints, turn off the 5 GHz band on your router. Turn off your phone and turn it back on. Proceed with setup. Afterwards, re-enable the 5GHz band.*This is a procedure needed with almost all Apple HomeKit devices from ANY manufacturer. If turning off 5GHz on your router is complicated, keep the manual handy or make a cheat sheet for future use*I have over a dozen Meross products in my home, and I'm quite happy with their performance.

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**Shop now:** [https://www.desertcart.hk/products/527902536-meross-smart-water-leak-detector-wifi-water-sensor-support-apple](https://www.desertcart.hk/products/527902536-meross-smart-water-leak-detector-wifi-water-sensor-support-apple)

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-02-08*