Smart Home

Review: Meross Temperature/Humidity Sensors

Elevate Your Home with Meross Sensors: Opening and Temperature/Humidity Sensor Test


Meross presents a range of smart home sensors, featuring opening sensors designed for doors, windows, drawers, and other openings and temperature and humidity sensors. In this comprehensive test, we explore the capabilities and user-friendliness of these Meross sensors, highlighting their reliance on a central hub for operation. Notably, a single hub can manage multiple sensors and conveniently draw power through a USB connection, often provided as part of complete sets.

Setting Up:

Configuring these sensors necessitates the use of the Meross app. During the setup process, it’s imperative to temporarily switch your phone or tablet’s Wi-Fi to the 2.4GHz frequency (which can be reverted to 5GHz afterward) and perform a reset on the sensors. Adding a new device is a straightforward process through the app. If the device isn’t immediately detected, you can search for it within the relevant category. Once configured, the sensors are ready for seamless operation.

Sensor Overview:

The opening sensor (Meross MS200HHK) comprises a larger and a smaller part. Despite their compact size, these sensors are versatile and can be applied to doors, windows, drawers, cabinets, and more. Proper installation entails positioning the two parts so they move apart when an opening is accessed and come into proximity when the opening is closed.

The temperature and humidity sensor (Meross MS100FHHK) stands out due to its innovative feature: it self-charges its battery using ambient light, eliminating concerns about battery replacement or manual charging. This sensor can be conveniently placed anywhere or affixed to a wall.

Sensor Functions:

The primary function of the opening sensor is to detect instances when an opening is accessed. It can log these activities and send notifications when necessary, making it an ideal choice for basic security applications. Furthermore, Meross devices and sensors are designed to collaborate seamlessly, automating actions such as turning devices on or off in response to an accessed opening. These automation settings are universally available across all devices within the settings menu.

The temperature and humidity sensor serves a straightforward purpose: it measures these values accurately, allowing you to monitor them, even remotely outside your home. Additionally, this sensor can be integrated into automation processes, triggering actions within specified parameters or issuing alarms as needed. These sensors boast compatibility with leading smart home platforms, including Apple HomeKit, Amazon Alexa, Google Assistant, and SmartThings.

Overall Function:

Meross sensors, including opening and temperature/humidity sensors, offer versatile and valuable functionality for enhancing your smart home. They seamlessly integrate into existing setups, providing convenience and automation possibilities. While they require a central hub and temporary Wi-Fi frequency adjustments during setup, their intuitive interface and compatibility with major smart home platforms make them a compelling choice for those looking to elevate their home’s intelligence. The self-charging feature of the temperature and humidity sensor adds an innovative touch, and the sensors’ collaboration with other Meross devices extends their utility, making them a worthwhile addition to any smart home ecosystem.


Meross sensors, encompassing both opening and temperature/humidity sensors, demonstrate remarkable versatility and a hassle-free installation process. They find applications in various scenarios and seamlessly integrate with other Meross devices, significantly expanding their utility within your smart home ecosystem. The Meross app further elevates the user experience by providing an intuitive and transparent interface. Altogether, these sensors are an invaluable addition to enhancing your smart home setup, offering convenience, flexibility, and effortless integration with your preferred smart platforms.


  1. Versatile Applications: Meross sensors offer diverse applications, including monitoring door, window, or drawer openings, as well as measuring temperature and humidity. This versatility enhances their utility in various settings.
  2. Seamless Integration: These sensors integrate smoothly with other Meross devices, enabling automation and creating a comprehensive smart home ecosystem.
  3. Convenient Power Source: The temperature and humidity sensor is unique in its ability to self-charge its battery using ambient light, eliminating concerns about battery replacement or recharging.
  4. Wide Compatibility: Meross sensors are compatible with popular smart home platforms, such as Apple HomeKit, Amazon Alexa, Google Assistant, and SmartThings, ensuring they can be easily incorporated into existing setups.
  5. Intuitive Interface: The Meross app provides an intuitive and transparent interface for managing these sensors, enhancing the user experience and simplifying configuration.


  1. Central Hub Requirement: To use these sensors, a central hub is necessary, which adds an initial setup step and cost, although one hub can manage multiple sensors.
  2. Wi-Fi Frequency Constraint: During setup, users need to temporarily switch their mobile device’s Wi-Fi frequency to 2.4GHz, which may inconvenience those primarily using 5GHz networks.
  3. Initial Configuration Complexity: Configuring these sensors involves specific steps like resets and device discovery, which might be challenging for less tech-savvy users.
  4. Limited Automation Features: While the sensors offer automation capabilities, their functionality may not be as extensive or customizable as some dedicated smart home systems.
  5. Dependency on Ambient Light: The self-charging feature of the temperature and humidity sensor relies on ambient light, potentially limiting its use in dimly lit areas or during extended periods of darkness.

Why You Should Consider Buying Meross Sensors:

  1. Enhance Home Automation: Meross sensors add a layer of automation and intelligence to your home, allowing you to create customized routines and scenarios that improve convenience and security.
  2. Seamless Compatibility: These sensors work well with popular smart home platforms, making them accessible to a wide range of users and ensuring they can be integrated into existing setups.
  3. No Battery Hassles: The self-charging temperature and humidity sensor battery reduces maintenance hassles and ensures continuous operation.
  4. Cost-Effective Expansion: If you already use Meross devices, adding these sensors is a cost-effective way to expand your smart home capabilities.
  5. Transparent Interface: The Meross app provides an intuitive and user-friendly interface, simplifying the management and customization of your smart home devices.

Overall, Meross sensors offer valuable smart home enhancements, and their pros outweigh the cons for users seeking reliable and versatile sensors to elevate their home automation experience.