Digital radio-controlled alarm clock tfa dostmann 60.2522.10 with temperature and humidity display, battery-powered (AAA), rectangular, black/grey

The tfa dostmann digital radio-controlled alarm clock SWITCH mini combines precise timekeeping with basic indoor climate monitoring in a compact rectangular housing. Time is synchronised automatically via the DCF77 radio signal and the display shows hours, minutes and seconds. Integrated sensors measure indoor temperature and relative humidity so you can monitor bedroom climate and react with heating or ventilation when needed. The unit is battery powered (one AAA battery) and its small footprint makes it suitable for bedside tables or travel; wall mounting is also possible.

Advantages

The device offers exact time reception and automatic summer/winter time adjustment, ensuring the clock always shows the correct time. Temperature and humidity values are visible on the same display, with a selectable automatic display cycle or manual toggling between time and climate. The clock records maximum and minimum temperature and humidity values and resets these at midnight. Its lightweight design and compact dimensions make it easy to move or pack for trips.

Suitable for

• Bedroom bedside table for time and basic climate monitoring
• Office desk where a compact clock and climate info are useful
• Travel use because of light weight and small size
• Wall mounting in small rooms or corridors where space is limited

When it may not be suitable

This clock provides basic indoor temperature and humidity readings intended for general monitoring; it is not a substitute for professional HVAC or environmental measurement equipment. If you need highly precise climate control, continuous data logging, or network connectivity, consider devices with dedicated sensors and logging features.

Key specifications

• Time reception: DCF77 radio-controlled signal with automatic summer/winter time change
• Display: time (hours, minutes, seconds), indoor temperature and relative humidity
• Recorded values: maximum and minimum temperature and humidity with automatic midnight reset
• Power supply: one AAA (1.5 V) battery (not included)
• Housing: rectangular plastic, black/grey finish
• Dimensions: approx. 84 x 25 x 38 mm
• Weight: approx. 36 g
• Mounting: free standing or wall mountable

How to use

Insert one AAA battery into the battery compartment following the polarity markings. Place the clock on a bedside table or mount it on a wall using a small nail. The clock will automatically receive the DCF77 signal to set the exact time; allow several minutes for first reception. Use the button to switch the display between time and climate or select the automatic mode so the display cycles every five seconds. Press the relevant buttons to view maximum and minimum temperature and humidity values; these are cleared automatically at midnight.

What to consider before purchase

• Requires reception of the DCF77 radio signal for automatic time synchronisation; reception quality depends on location
• Battery is not included — requires one AAA (1.5 V) cell
• Climate readings are for general indoor monitoring and not laboratory-grade accuracy

Usage recommendations

Place the clock away from direct heat sources, drafts or windows to obtain more representative room temperature and humidity readings. For reliable time reception, position the device near a window or in a location with minimal metal obstructions when setting up.