TFA Dostmann 45.2027 Analog Round Wall Thermometer, White, -30 to +50 °C, Battery-Free

In a cosy living room or a busy office, knowing the exact indoor temperature helps you adjust heating and stay comfortable. The TFA Dostmann 45.2027 is a simple, reliable analog thermometer that shows the current temperature in Celsius on a clear, easy-to-read scale. Its round white plastic housing blends into any wall, and the large numbers make it readable from across the room. No batteries, no wires—just a precise bimetal sensor that works mechanically for years.

Key specifications

• Analog display with clear scale and large numbers
• Measures indoor temperature from -30 to +50 °C
• Accuracy: ±1 °C
• Bimetal sensor technology, battery-free operation
• Round design, diameter 113 mm, depth 35 mm
• White plastic housing, wall-mountable or self-adhesive
• Brand: TFA Dostmann, model 45.2027

Why choose it

This thermometer is a fuss-free solution for anyone who wants a quick temperature check without digital complexity. The mechanical bimetal sensor responds reliably and needs no power source, so you never have to replace batteries. Its compact, lightweight design (only 65 g) makes it easy to mount on any wall or stick to a smooth surface. The white finish and simple round shape suit both home and professional environments.

Ideal use cases

• Living rooms, bedrooms, and kitchens for everyday comfort monitoring
• Offices and reception areas to maintain a pleasant working climate
• Greenhouses or hobby rooms where indoor temperature matters
• Classrooms and care facilities needing a clear, glanceable display

Good to know

The thermometer is intended for indoor use only. It comes with a wall-mounting option and self-adhesive pad for flexible placement. Since it operates mechanically, it requires no maintenance other than occasional dusting. The temperature range covers typical indoor conditions and even unheated spaces like garages or basements down to -30 °C.