Digital weather station TFA Dostmann 42.4000 — compact indoor unit, black/yellow, 80×65 mm, 180 g

TFA Dostmann 42.4000 is a compact digital weather station designed for indoor use, finished in black and yellow. The unit measures 80 × 65 mm and weighs 180 g, making it suitable for placement on a desk, shelf or bedside table. It provides basic environmental readings including temperature-related barometric information and an altimeter reading to help monitor indoor conditions in living rooms, offices and bedrooms.

Advantages

The device combines portability with straightforward functionality: a compact housing and low weight make it easy to move between rooms. It operates without batteries and features simple manual adjustment for calibration and setting. Included accessories—a neck belt and a leather bag—allow protected transport and convenient handling. The combination of an altimeter and both absolute and relative air pressure readings provides multiple perspectives on atmospheric changes.

Suitable for

• Monitoring indoor atmospheric conditions in living rooms and bedrooms
• Use on office desks to track pressure trends and room environment
• Portable checking of altitude-related readings during travel or indoor testing
• Users who prefer a battery-free instrument with simple manual controls

Key specifications

• Dimensions: 80 × 65 mm
• Weight: 180 g
• Altimeter range: 0–5000 metres
• Barometer range (absolute and relative): 580–1040 hPa
• Power: battery not required (mechanical/manual operation)
• Accessories included: neck belt and leather bag
• Adjustment: simple manual calibration

How to use

Place the weather station on a stable horizontal surface such as a desk, shelf or bedside table. Use the manual adjustment controls to calibrate the barometer and altimeter according to local reference values or a known altitude. Read absolute and relative air pressure values directly from the display or indicator and consult the altimeter for elevation information. The unit does not require batteries; maintain it in its leather bag when transporting with the included neck belt for protection.

Usage recommendations

For best accuracy, calibrate the barometer using a reliable local pressure reading and set the altimeter at a known reference altitude before taking measurements. Keep the device away from direct heat sources or drafts to avoid transient measurement errors, and store it in the leather bag when not in use to protect the housing and mechanical parts.