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Digital solar indoor-outdoor thermometer ECO SOLAR 30.1038


  • Display of indoor-outdoor temperatures
  • Solar-powered
  • Outdoor temperature via cable
  • Also for the monitoring of freezer / aquarium
  • Max.-min. values

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Product specification

Sufficient light is enough to power TFA's "ECO SOLAR" thermometer. Since this environmentally friendly device is solar powered, it’s ideally suited for simultaneous measurement of indoor and outdoor temperatures.
Controlling the room temperature is an important factor for a comfortable and healthy living environment and it helps save energy. Even one degree less temperature can bring up to 6% reduction in heating costs.
Placed at the window, the sensor cable is simply led outside to measure the outside temperature. The two temperature values are displayed alternately. The max.-min. memory with manual reset allows the observation of the peak values over a self-selected period of time.
The application possibilities of thermometers with sensor cables are manifold and not only limited to the outdoor temperature. Due to the large measuring range, the waterproof measuring sensor can also be used for temperature control of the refrigerator and freezer or for measuring the water temperature in the aquarium.
The linear, sleek design of "ECO SOLAR" thermometer is not only good for nature, but also aestetically pleasing.


  • For reading the indoor and outdoor temperature (via cable)
  • Solar powered
  • Max.-min.-function
  • Registered TFA design

TFA Quality mark:

  • Registered TFA Design Patent

Product information for download:

Technical data

Delivery contents Solar indoor-outdoor-thermometer, battery, instruction manual
Measuring range temperature indoor -20...+70°C (-4...+158°F)
Measuring range temperature outdoor -40...+70°C (-40...+158°F)
Cable length ca. 300 cm
Material Plastic, solar cell
Assembling Wall mounting or freestanding
Power consumption Solar, back-up battery
Batteries 1 x LR44 1.5 V
Batteries included yes
Dimensions (L) 90 x (B) 18 (47) x (H) 90 mm
Weight 74 g

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