Magnetic holder for a DS18B20

Design
I wanted to attach my OneWire DallasTemperature sensor DS18B20 directly to the radiator near the inlet to conveniently record the flow temperature with Home Assistant and thus control my heating booster.
For this, I designed this holder.

To prevent heat buildup, the sensor is open at the front. This open design has already proven to be very practical and reliable for measuring room temperature in other places. This way, the sensor gets the most realistic temperature values and is still securely attached.

Assembly
The sensor is simply inserted into the designated recess. Depending on the supplier, insertion may be a little easier or harder – I have found that there are different diameters of heat shrink tubing used.

The magnets (6 x 2 mm) are pressed into the designated holes and, if necessary, secured with a small drop of super glue. This way, the holder reliably stays on the radiator, but can also be quickly detached or repositioned.

Print
I used PETG HF from Bambu Lab – that works great and in my opinion is also the right choice for use on the radiator. For pure indoor use without direct contact with very high temperatures, PLA should also work without problems.

Depending on the printer, it may be useful to print with slightly increased wall thickness or more infill to give the magnets good hold. Support is not needed, so printing is quick and easy.

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All devices were purchased and paid for by myself.