Smart wireless smoke detector MEROSS MA151-UN

The MEROSS MA151-UN smoke detector uses advanced dual optical detection technology to provide fast and accurate detection of danger before a fire breaks out. With a loud alarm of ≥85 dB, audible from a distance of 3 meters, and full 360° coverage, the device effectively increases the safety of household members. The compact ceiling design of 125 × 125 × 33 mm and dual AA battery power supply ensure convenient installation and a long service life of up to 3 years.

Accurate smoke detection and fewer false alarms

The use of dual optical detection technology allows the detection of both white and black smoke, which significantly increases the efficiency of the sensor. Multi-standard optics ensure sensitivity and accuracy of measurements, while reducing the risk of unnecessary alarms. In addition, the device performs automatic self-tests, which can also be triggered via the app, ensuring that the system is working properly at all times.

Integrated alarm system for the whole home

The sensor works with a dedicated Meross hub (not included), allowing you to create a connected alarm system. If one device detects smoke, all paired sensors trigger an alarm, increasing the effectiveness of alerts throughout the home. Even if the hub has no internet or power, local communication continues to work, ensuring uninterrupted protection. The hub itself has an audible alarm with a volume of 110 dB and an extremely fast response time of 2 ms.

Smart scenarios and full control via the app

With the Meross app, you can create automations that improve safety and comfort. For example, smoke detection can automatically turn off other devices in your home. The app also lets you view event history up to 10 years ago and sends notifications about alarms, low battery, device issues, or when your device is offline. Important alerts can bypass your smartphone's silent mode, ensuring you don't miss important information.

User comfort and functions adapted to everyday life

Do Not Disturb mode allows you to turn off the indicator light and low battery notifications at night, promoting a peaceful sleep. The alarm silence function lasts for about 10 minutes, and the low battery warning can be temporarily disabled for about 10 hours. In addition, the device is tested directly from your smartphone, so you don't have to reach for the sensor mounted on the ceiling.

Warranty: 12 months

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Same summary

The MEROSS MA151-UN smart wireless smoke detector is designed for users who want to quickly and easily protect their home without complicated wiring. It is mainly suitable for apartments, houses and holiday homes, where easy installation, good sound signaling and the ability to receive notifications via smartphone are key. Due to its specialized detection, it is most suitable in rooms where there is a risk of fire due to smoke, but it is not intended to detect carbon monoxide or gas. Users who need complete security for various types of hazards (e.g. gas or CO) should consider additional devices.

Recommendation source: Enaa guides and team experiences.

User view

A smoke detector like this model is most often used by families, individuals or holiday home owners looking for a quick and non-invasive solution to increase the safety of their living space. Its smart connectivity options make it attractive to those who want instant notifications and integration into their smart home – especially convenient in multi-storey homes or where the space is often not occupied at all times.

Users often choose the Meross brand because of its reliability and good integration of smart devices into a single system, which further contributes to the feeling of security and ease of use.

Why buy at Enaa

At Enaa, we offer a clear comparison of current models and extensive data when choosing smoke detectors, enabling a more informed decision based on your needs. Our team is distinguished by practical knowledge of products and categories, so users can expect honest information based on experience in the field of home security.

Answers to frequently asked questions

Does this smoke detector also detect carbon monoxide or gas?

The MEROSS MA151-UN detector detects smoke only, so we recommend a separate specialized device for protection against carbon monoxide or gas.

How is the detector installed – do I need an electrician?

Installation is simple and does not require special tools or electrical knowledge, so you can install it yourself in a few minutes.

What happens if the battery dies?

When the battery is close to empty, the detector provides a clear audible warning, allowing for timely response and replacement.

Can I connect the detector to a mobile app?

Yes, the device allows you to connect to your smartphone, which means you will receive notifications even when you are not at home.

Is regular inspection of the device necessary?

It is recommended to periodically check the detector's operation using the test button, as regular maintenance ensures long-term safety.

Description updated: June 2026