Digital LCD thermometer hygrometer magnet alarm outdoor sensor
Are you looking for a reliable, accurate and versatile way to monitor living conditions or control the temperature in specific environments? The Digital LCD Thermometer Hygrometer Magnet Alarm Outdoor Sensor (SKU: 09239) is a premium weather device designed to accurately measure temperature and humidity. With its advanced functionality and compact design, this device is an indispensable accessory for any home, office, workshop, greenhouse or warehouse.
This multi-purpose device not only provides basic room temperature measurement, but also allows simultaneous monitoring of outdoor conditions or specific closed systems using the included wired outdoor sensor. Whether you want to monitor the temperature in a refrigerator, freezer, aquarium, terrarium or outdoors, this device will provide fast and accurate data in one place.
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Why choose this digital LCD thermometer and hygrometer?
The correct temperature and humidity level affects our health, well-being, the quality of stored food and the successful growth of plants. Too low or too high humidity can cause gum problems, skin problems or even the development of mold in living spaces. With the integrated hygrometer, you will have full control over the climate in your home, allowing you to take timely action (e.g. ventilate or use a humidifier).
In addition, the device offers an advanced sound and light (LED) alarm function. If the temperature or humidity values exceed the limits you have set, the device will immediately notify you. This is extremely useful for protecting sensitive plants in greenhouses, animals in terrariums or valuable food in freezers.
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Key product benefits and features

Simultaneous measurement of indoor and outdoor temperatures: Thanks to the external sensor on the cable, you can easily compare indoor and outdoor conditions or monitor the temperature in cooling devices.
Accurate built-in hygrometer: Monitor the relative humidity indoors and ensure optimal living comfort or ideal conditions for pets and plants.
Customizable sound and LED alarm: Set alerts for high or low temperature and humidity. When limits are exceeded, the device alerts you with a sound signal and a flashing red LED.
MAX/MIN value memory: The device automatically remembers the highest and lowest measured values, allowing you to easily review fluctuations throughout the day or night.
Clearly readable LCD display: The large and clear display simultaneously shows temperature (indoor/outdoor), humidity, minimum/maximum values and the status of set alarms.
Easy to install: The built-in magnet allows for quick attachment to the refrigerator or other metal surfaces. The device also has a convenient stand for placing on a table and the option of wall mounting.

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Technical specifications and measuring ranges

Internal temperature measurement range: -10 °C to +50 °C
Outdoor temperature measuring range: -40 °C to +90 °C
Humidity measurement range: 20% to 95% relative humidity (RH)
Temperature units: °C or °F (easy to switch with one button)
External sensor: Wired temperature sensor on cable (ideal for aquariums, refrigerators or outdoor installation)
Warning system: Audible alarm + flashing LED light when set values are exceeded
Power supply: 1 × AAA battery (1.5 V) – ensures extremely low consumption and long-lasting operation
Device dimensions: 8.5 cm x 6.5 cm (compact and discreet design)

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Instructions for use and easy setup
The device is designed with simplicity and intuitive operation in mind. Follow the steps below to quickly set up units and alarms:

Switch between temperature units: Simply press the C/F button on the device panel to switch between Celsius (°C) and Fahrenheit (°F).
Entering alarm settings: Press and hold the SET button to access the temperature or humidity alarm settings.
Adjusting the value: When the value on the display starts flashing, increase it with the + button or decrease it with the - button.
Moving between settings: Short press the SET button to move to the next desired setting.
Saving settings: When you are finished setting the desired values, press the ENT button to save the settings and exit the menu.

Alarm function: If the measured temperature or humidity exceeds the set range, the device will immediately sound an alarm and the LED light will start flashing. If the values remain outside the safe range, the alarm reminder can sound again (the reminder can remain active for up to 12 hours). During the alarm, you can press any button to stop the alarm immediately.
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Frequently Asked Questions (FAQ)
How does the outdoor sensor work and where can I use it?
The external sensor is connected to a thin but durable cable that can be easily routed through a window seal, refrigerator or freezer door. Since the sensor is waterproof, it is perfectly suitable for direct temperature measurement in aquariums, terrariums, coolers or simply for monitoring the outside temperature outdoors.
How does the device warn of temperature or humidity exceedances?
The device has a built-in dual warning system. When the values exceed the limits you have set in the settings, a loud audible alarm is triggered and a red LED light starts flashing. You can easily silence the audible signal by pressing any button on the device.
What kind of battery does the device need and how do I install it?
The digital thermometer hygrometer operates on one standard AAA battery (1.5 V). Due to its extremely low power consumption, one battery will last for several months of continuous operation. The device can be mounted on a wall, placed on a flat surface using the retractable stand, or attached to a refrigerator using the strong magnet on the back.


Responsible persons:
VERK GROUP - VERK GROUP SIKORSKI SPÓŁKA KOMANDYTOWA WYGODY 16, 05-090 PODOLSZYN NOWY, POLAND, zamowienia@verk.sklep.pl, +48 888055550
Distributor for Slovenia: Haloorodje.si, Online Sales, Rok Groznik sp, Podturn 42, 8350 Dolenjske Toplice, info@haloorodje.si, +38669731944, Slovenia
Product origin: China

Instructions for using the product:
• Insert the batteries into the device.
• Connect or install an external sensor.
• Place the device on a flat surface or attach it with a magnet.
• Wait a few minutes for stable measurements.
• Set an alarm or other functions if necessary.
• The LCD screen will display internal and external data.
• Check the battery status regularly.

Useful tips:
• Place the sensor away from direct sunlight.
• Ideal for refrigerators, aquariums or outdoor areas.
• Use the magnetic mount on clean metal surfaces.
• Clean the LCD screen regularly with a soft, dry cloth.
• Use quality batteries for stable operation.
• Place the device in a location with good airflow.
• Regularly check the accuracy of measurements.

Warnings:
• Do not immerse the device in water.
• Do not use damaged batteries or sensor.
• Keep out of reach of children.
• Do not expose to extreme temperatures or humidity.
• Do not disassemble the device yourself.
• Do not clean the LCD screen with aggressive cleaning agents.
• Protect the outdoor sensor from direct rain.

Same summary

The digital LCD thermometer hygrometer with magnet and external sensor is intended primarily for home use, where it is important to monitor the temperature and humidity both indoors and outdoors. Due to its battery power, it can be easily placed in various places in the apartment, children's room, pantry or near plants. Since it does not have a barometer, it is less suitable for users who also want to monitor air pressure data and more advanced weather trends. When choosing a combined device like this, the practical thing is that it allows you to basic control of your living space and environment in one device, without unnecessary complications or complexity.

Recommendation source: Enaa guides and team experience.

User view

Most often, such a thermometer-hygrometer is used by individuals and families who want to have a better overview of home comfort or to ensure that indoor conditions are optimal for health, babies or plants. It is also practical for users who need a simple solution for monitoring both indoor and outdoor temperature and humidity, for example in apartments, garages, pantries or conservatories.

Users often choose Verk brand products precisely because of their ease of use and reliability in everyday environments.

Why buy at Enaa

At Enaa, you can choose from a diverse range of weather gauges, where everyday practicality and useful value are highlighted. With our experience in the weather stations and thermometers category, we have prepared a selection that follows the needs of different users at home or in the garden.

Answers to frequently asked questions

Can I use a thermometer-hygrometer in a child's room?

Yes, the combined thermometer and hygrometer is also very suitable for children's rooms, as it helps monitor the temperature and humidity of the air, which is important for the well-being and health of children.

How do I power the device and how often do I need to replace the batteries?

The device is battery-operated, so the setup is flexible. The frequency of battery replacement depends on the intensity of use and the quality of the batteries, but is usually moderate for home use.

Does the external sensor measure only temperature or also humidity?

An external sensor usually allows you to monitor the temperature and humidity outside the room, so you will have an overview of the conditions in both locations.

Is the display clear enough for quick reading?

The LCD screen allows for a clear display of basic data, making it easy to use even in households and places where you need quick information.

Does this model allow air pressure measurement?

This device does not support air pressure (barometer) measurement, but it is an excellent choice for monitoring temperature and humidity in living spaces and outdoors.

Description updated: June 2026