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Home Assistant TestFlight
Meross MS400 water leak sensor
Meross

Meross MS400 water leak sensor

Sensors · Security

WorksLocal

1 report: 1 says it works.

Reported with 1 integration: Meross LAN.

What people report

IntegrationIn Home AssistantIn Apple HomeWhat they saidSource
Meross LANWorks LocalListed as supported in README
Saved copy
… Smart RGB bulb with dimmable light; MSL320: Smart Wifi Light Strip; MSL420: Smart Ambient Light; MSL450: Smart LED Lamp; Hub; MSH300: Smart WiFi Hub; Sensors; MS100: Smart Temperature/Humidity Sensor; MS200: Smart Door/Window Sensor; MS400: Smart Water Leak Sensor; GS559AH: Smart Smoke Sensor; Thermostats; MTS100: Smart Thermostat Valve; MTS150: Smart Thermostat; MTS200: Smart Wifi Thermostat; MTS205: Smart Wifi Thermostat; MTS300: Smart Wifi Thermostat; MTS960: Smart Wifi Socket Thermostat; Covers; MRS100: Smart WiFi Roller Shutter; MSG100: Smart WiFi Garage Door Opener; MSG200: Smart WiFi …

Excerpt saved from the README on 2026-10-23.

README

Each row is one report from a GitHub thread, an integration’s docs, or r/homeassistant. Check the date and the linked source before you buy.

In ReReHome

Once Home Assistant’s HomeKit Bridge shares it, this device reaches Apple Home as a HomeKit accessory behind your Home Assistant bridge, so ReReHome shows and controls it like any other.

This model is also in the ReReHome accessory catalog as Meross Smart Water Leak Sensor.

Identifiers

BrandMeross
ModelMS400
CategorySensors