Indoor electronic thermometer with hygrometer Terdens 3618 — temperature and humidity measurement

Terdens 3618 is an indoor electronic thermometer with integrated hygrometer designed to display air temperature and relative humidity for rooms, offices and other indoor spaces. The compact instrument provides continuous digital readouts that help track comfort conditions, plant care requirements and storage environments. The device measures and displays both temperature and humidity on a single screen to support everyday monitoring of indoor climate.

Advantages

The device combines temperature and humidity measurement in a small footprint suitable for tabletop or shelf placement. Its digital display offers clear numerical readings for quick interpretation, and the built-in sensor provides continuous monitoring without manual effort. The compact design supports placement in homes, offices or hobby spaces where unobtrusive climate tracking is needed. The instrument is battery powered and intended for simple, maintenance-light use.

Suitable for (tasks / use cases)

• Monitoring room comfort and indoor climate in living areas and bedrooms
• Tracking humidity and temperature for indoor plants and greenhouses
• Maintaining storage conditions for sensitive items such as paper, textiles or electronics
• General environmental monitoring in offices, workshops and hobby rooms

Key specifications

• Measured parameters: air temperature and relative humidity
• Display: digital readout showing temperature and humidity simultaneously
• Mounting: tabletop or shelf placement (compact form factor)
• Power source: battery operated for portable indoor use
• Sensor type: integrated environmental sensor for continuous monitoring

How to use

Place the thermometer with hygrometer on a stable surface away from direct sunlight, heat sources and drafts for representative indoor readings. Insert the required batteries according to the device instructions, switch the unit on, and allow several minutes for the internal sensor to stabilize before taking readings. Read the temperature and relative humidity values directly from the digital display. For more accurate trend monitoring, position the device in the area where you want to assess conditions and check readings periodically.

Usage recommendations

To ensure reliable measurements, avoid placing the device near windows, radiators or ventilation outlets. Replace batteries when display dims and clean the housing occasionally with a dry cloth. For plant care or storage-sensitive items, use the thermometer and hygrometer readings to adjust humidification or heating strategies and to document conditions over time.