I am having a hard time finding a good and widely recognizable icon for Sensors. The icon needs to look good at small sizes (16x16 px.) A thermometer icon, while it is widely recognizable, probably would not work because this icon represents temperature, voltage, current, and power sensors.
1 Answer
The closest you can get to a universal symbol for "sensor" might be a large dot/point and some waves moving away from it. Example
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