LEGO® WeDo 1.0 Motion Sensor
Motion sensor for SBrick Plus.
The Motion sensor (part 9583) can detect objects very roughly up to 15 cm away, depending on the shape of the object and other properties (reflection, colour, etc.). The motion sensor is an active IR (infrared) sensor. One of the visible parts emits a light while the other is the detector. The LED light is pulsed at 7 kHz. The sensor can work with 5 to 9 volts.
You can connect this adapter to the SBrick Plus without any adapter.
We used this sensor in this video: