Order useful add-on to STEM II, to expand the creative possibilities

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fischertechnik Optical Color Sensor

Sensor

128599

Ideal for color recognition

HK$ 326.00
SparkFun Soil Moisture Sensor (with Screw Terminals)

Sensor

SEN-13637

The SparkFun Soil Moisture Sensor is a simple...

HK$ 60.00