Hygrometer / Psychrometer TFA Dostmann 30.5057.02 — Indoor electronic hygrometer, battery-powered, silver/white

The TFA Dostmann 30.5057.02 digital thermo-hygrometer measures indoor temperature and relative humidity to help maintain a healthy indoor climate. Housed in a compact silver-and-white vertical case, the battery-powered device displays current values, time, and stored maximum and minimum readings for temperature and humidity. It can be placed on a table using the integrated stand or mounted on a wall using the hanging loop.

Advantages

The instrument provides continuous measurement of ambient temperature and relative humidity and stores maximum and minimum values for easy monitoring. A comfort zone indicator helps you keep conditions within recommended ranges, and the built-in clock adds practical information. The unit’s compact design and dual mounting options make it simple to position in living rooms, cellars, music rooms, or storage areas.

Suitable for

• Monitoring home rooms (living room, bedroom)
• Protecting musical instruments and electronics in a music room
• Checking humidity in cellars and storage areas
• Indoor plant care

When it may not be suitable

This device is intended for indoor ambient monitoring and is not designed for outdoor use or for measuring extremely high-precision laboratory conditions. If you require calibrated or certified measurements for professional laboratory, industrial process control, or outdoor weather monitoring, choose a specialized instrument.

Key specifications

• Measured parameters: ambient temperature and relative humidity
• Display: current values, stored maximum and minimum values, comfort zone indicator, time
• Power: battery-powered (batteries supplied/not supplied as per packaging)
• Housing: compact vertical design, silver and white
• Mounting: table stand and hanging loop for wall mounting

How to use

Install batteries, set the current time if required, and place the thermo-hygrometer in a representative location away from direct heat sources, drafts, or windows. Use the stand for tabletop placement or the hanging loop for wall mounting. Read current temperature and humidity from the display and consult the stored maximum and minimum values when checking fluctuations. Use the comfort zone indicator to assess whether ventilation or heating adjustments are needed.

What to consider before purchase

• Intended location: indoor use only
• Required accuracy: suitable for home and storage monitoring, not laboratory-grade
• Mounting preference: table or wall placement
• Visibility needs: compact vertical display

Usage recommendations

Place the device at least 1–1.5 m above the floor and away from direct sunlight or heating elements for representative readings; check stored max/min values regularly to detect trends and adjust ventilation or heating accordingly.