Smart Multi-Function Hygrometer & Thermometer MEROSS MS120

MEROSS MS120 Smart Multifunction Hygrometer and Thermometer

The MEROSS MS120 is a smart hygrometer and thermometer that allows you to monitor temperature, relative and absolute humidity, dew point, and vapor pressure deficit (VPD). The device features a 1.9-inch LCD display that makes it easy to read measurement results. Thanks to Bluetooth Low Energy (BLE) technology and the Meross app, you can view measurement history and monitor environmental conditions. A built-in alarm with a volume of up to 100 dB alerts you when set thresholds are exceeded. The IP65 dust- and water-resistant housing, an operating temperature range of -20°C to 60°C, and a battery life of up to 3 years allow you to use the device both indoors and outdoors.

Precise measurements and a large LCD display

The MEROSS MS120 offers temperature measurement accuracy of ±0.2°C and humidity accuracy of ±2% RH. A sampling rate of every 3 seconds allows you to monitor environmental conditions in real time. On the LCD screen, you can conveniently switch between five parameters to quickly get the information you need. The device is ideal for use in greenhouses, terrariums, wine cellars, and storage rooms, as well as for storing musical instruments or cigars. This makes it easier to maintain the right conditions for plants, animals, and items sensitive to changes in temperature and humidity.

Measurement History and Smart Notifications

The Meross app lets you view graphs and measurement history, allowing you to analyze changes in environmental conditions over the long term. The hygrometer stores data locally for 120 days, and when connected to the Meross Bluetooth Hub, it provides access to cloud-based history for up to 2 years. The collected data can also be exported for further analysis. The device offers various alert options, including an adjustable audible alarm and in-app notifications, which alert you when set temperature or humidity thresholds are exceeded. This allows you to respond more quickly to changes that may affect stored items or breeding conditions. The Meross Bluetooth Hub is sold separately.

Durable Design for Harsh Conditions

The MEROSS MS120’s housing is dust- and water-resistant (IP65) and UV-resistant, making the device suitable for outdoor use as well. The hygrometer operates at temperatures ranging from -20°C to 60°C and at humidity levels from 10% to 90% without condensation. These features allow you to monitor conditions in areas exposed to fluctuating temperatures, dust, and moisture. Its compact dimensions of 85 × 31.5 × 29.5 mm make it easy to place the sensor in the desired location.

Power and Wireless Connectivity

Bluetooth Low Energy (BLE) technology provides wireless communication with a range of up to 150 m in open spaces, while consuming very little power. The hygrometer is powered by a single replaceable CR123A battery, which lasts up to 3 years. The MEROSS MS120 is compatible with smartphones running iOS 13 or later and Android 8.0 or later. The device also supports the Matter standard via the Meross Bluetooth Hub, enabling integration with smart home systems that comply with this standard. The gateway is not included in the package and must be purchased separately.

Included in the package

• Meross MS120 hygrometer and thermometer
• CR123A battery
• Battery compartment opening tool
• User manual

 

ManufacturerMerossModelMS120Device typeSmart hygrometer and thermometerDisplayLCD, 1.9 inchesMeasured parametersTemperature, relative humidity, absolute humidity, dew point, vapor pressure deficit (VPD)Temperature measurement accuracy±0.2°CHumidity measurement accuracy±2% RHSampling frequencyevery 3 secondsOperating temperature range-20°C to 60°COperating humidity range10–90% RH (non-condensing)Protection ratingIP65UV resistanceYesConnectivityBluetooth Low Energy (BLE)Bluetooth rangeup to 150 m in open spaceMatter supportyes, via the Meross Bluetooth Hub (sold separately)Audible alarmadjustable, up to 100 dBApp notificationsyesLocal measurement historyup to 120 daysCloud measurement historyup to 2 years (Meross Bluetooth Hub required)Data exportYesPower supply1 × CR123A battery (replaceable)Supported systemsiOS 13.0 or later, Android 8.0 or laterNetwork requirementsExisting Wi-Fi network required for features that use the gatewayDimensions85 × 31.5 × 29.5 mm