It is a common component that is used to turn on or off the circuit. The two buttons, one red and one blue, are very flexible when pressed and can be pressed multiple times.
Specifications
Connections: RJ11 4P4C
Power: 3.3V
Connections type: Digital output
You can find the introduction of this product following this link
https://wiki.elecfreaks.com/en/microbit/sensor/planet-x-sensors/Plant_X_EF05017
