Assuming the alarm is going off, how do we know if the alarm is going off for smoke or monoxide?

If the alarm is caused by smoke, there must be smoke near the siren. Smoke is usually visible and accompanied by an odor. Otherwise, the high probability is an alarm caused by excessive carbon monoxide.

How do I turn off the green blink?

The green blink is a safety factor to show it is functioning.

Are these wifi interlinked?

No flashing light keeps you awake kept giving false alarms sent back

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Meross Water Leak Detector, Smart Water Alarm with Hub, App Alert, Replaceable batteries, Wireless Flood Sensor, Interlinked, Apple HomeKit Supported, IP67, for Kitchen Bathroom Basement Garage

Meross Water Leak Detector, Smart Water Alarm with Hub, App Alert, Replaceable batteries, Wireless Flood Sensor, Interlinked, Apple HomeKit Supported, IP67, for Kitchen Bathroom Basement Garage

Product ID: 558842418

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Details

Colour
Start Kit(with
Brand
meross
Power source
Battery
Compatible devices
Smartphone
Product dimensions
7.2L x 7.2W x

💧0.5mm leak sensitivity

📲Real-time app alerts

🔗Supports 16 devices on Meross Hub

Description

💦 Stay dry, stay smart — never miss a drip with Meross!

INSTANT ALERTS ANYWHERE - Receive loud alarms plus instant app notifications, so you’re always in control—even when away from home.
RUGGED IP 67 WATERPROOF DESIGN - Built to withstand dust and water exposure, perfect for kitchens, basements, bathrooms, and garages.
SEAMLESS SMART HOME INTEGRATION - Works effortlessly with Apple HomeKit and SmartThings for voice control and automated leak responses.
ENERGY EFFICIENT HUB CONNECTIVITY - Meross Hub supports up to 16 devices, extending battery life and centralizing smart home management.
PINPOINT PRECISION LEAK DETECTION - Detects water presence at an ultra-sensitive 0.5mm threshold to catch leaks before they escalate.

The Meross Water Leak Detector is a highly sensitive, IP67-rated smart sensor that detects water leaks at just 0.5mm. It pairs with the included Meross Hub to support up to 16 smart devices, delivering instant app alerts and loud alarms. Compatible with Apple HomeKit and SmartThings, it enables voice control and smart automation to protect your home’s most vulnerable areas like kitchens, bathrooms, and basements. Powered by replaceable lithium batteries, it combines durability with energy efficiency for reliable, round-the-clock leak detection.

Specifications

Battery description	Lithium
Number of batteries	1 CR123A batteries required. (included)
Voltage	3 Volts
Control method	Voice
Noise level	60 Decibels
Mounting type	Tabletop Mount
Sensor technology	Contact Sensor
Size	Start Kit(with Hub)
Manufacturer	meross
Part Number	MS400
Product Dimensions	7.2 x 7.2 x 4.2 cm; 230 g
Batteries	1 CR123A batteries required. (included)
Item model number	MS400
Style	Smart Water Leak Alarm
Pattern	Solid
Item Package Quantity	1
Special Features	Waterproof
Included Components	Adapter, Batteries
Batteries included?	Yes
Batteries Required?	Yes
Battery Cell Type	Lithium Manganese Dioxide
Item Weight	230 g

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