MEROSS MA151-UN Intelligent Wi-Fi Smoke Sensor

Smart Wi-Fi Smoke Detector MEROSS MA151-UN

The smoke detector MEROSS MA151-UN utilizes advanced dual optical detection technology, ensuring fast and precise threat detection even before a fire develops. With a loud alarm ≥85 dB audible from 3 meters away and full 360° coverage, the device effectively enhances the safety of household members. Its compact design measuring 125 × 125 × 33 mm is ceiling-mounted, and powered by two AA batteries, guaranteeing convenient installation and a long operational life of up to 3 years.

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Precise Smoke Detection and Fewer False Alarms

The use of Dual Optical Detection technology allows for the detection of both white and black smoke, significantly increasing the effectiveness of the detector. The multi-standard optics are responsible for the sensitivity and accuracy of measurement while minimizing the risk of unnecessary alarms. Additionally, the device performs automatic functionality tests that can also be initiated from the app, ensuring that the system operates correctly at all times.

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Integrated Alarm System for the Entire Home

The detector works with a dedicated Meross hub (not included), allowing the creation of a connected alarm system. If smoke is detected by one device, all paired detectors trigger the alarm, increasing the effectiveness of warnings throughout the home. Even in the absence of internet or power to the hub, local communication continues to function, ensuring continuous protection. The hub itself offers a sound signal of 110 dB and a very fast response time of 2 ms.

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Smart Scenarios and Full Control in the App

From the Meross app, you can create automations that enhance safety and convenience. For example, smoke detection can automatically turn off other devices in the home. The app also allows you to view event history for up to 10 years and sends notifications about alarms, low battery levels, device issues, or its offline status. Critical alerts can bypass the silent mode on your smartphone, ensuring you don't miss important information.

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User Comfort and Features Tailored to Daily Life

The "Do Not Disturb" mode allows you to turn off the light signals and low battery notifications at night, promoting a peaceful sleep. The alarm mute function works for about 10 minutes, and the low battery warning can be temporarily disabled for about 10 hours. Additionally, testing the device can be done directly from your smartphone, eliminating the need to reach for the ceiling-mounted detector.

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Specifications

Manufacturer	Meross
Model	MA151-UN
Power Supply	DC 1.5V × 2 AA batteries (PAIRDEER LR6)
Product Lifespan	10 years from the production date
Battery Life	Up to 3 years
Operating Temperature	0°C~55°C
Operating Humidity	≤95% RH without condensation
Alarm Volume	≥85 dB (from 3 m), 3.0–3.5 kHz
Installation Location	Ceiling
Low Battery Mute Time	About 10 hours
Alarm Mute Time	About 10 minutes
Dimensions	125 × 125 × 33 mm
System Requirements	iOS 13 or newer, Android 8.0 or newer
Network Requirements	2.4 GHz Wi-Fi network