Vnitřní/vnější maxima-minima teploměr TFA Dostmann (30.1024)

Monitor temperature extremes with a measurement range of -30 °C to +50 °C and a mechanical memory that records the highest and lowest readings since the last reset.

Overview

The TFA Dostmann 30.1024 is an analog maxima-minima thermometer for indoor and outdoor use. It uses a U-shaped capillary tube filled with alcohol, making it mercury-free. Two indicators inside the tube are pushed by the liquid to mark the maximum and minimum temperatures. A manual reset button returns the indicators to the current temperature.

What stands out

• Records highest and lowest temperatures automatically
• Works without batteries or power supply
• Wall-mountable with integrated eyelet
• Weather-resistant plastic housing for outdoor placement
• Clear scale with 1 °C graduation and ±1 °C accuracy

Technical details

• Temperature measurement range: -30 °C to +50 °C
• Measurement units: Celsius (°C)
• Display: Analog capillary tube
• Thermometric liquid: Alcohol (mercury-free)
• Housing material: Plastic
• Tube material: Glass
• Colour: White
• Mounting: Wall mountable
• Power source: Mechanical (no batteries required)
• Reset function: Manual

Our verdict

A reliable, maintenance-free thermometer for tracking temperature swings in homes, gardens, or greenhouses.