Through it, you can control a circuit of high voltage with low voltage, say 5V on the controller. There is an indicator LED on the board, which will light up when the controlled terminals get closed.

This is a small breadboard (4,6x3,6 cm) with 170 tie points. It is self-adhesive and compatible with the Arduino Proto Shield.

It can detect the change in capacitance when a finger is nearby. This means no matter if your finger directly touches the pad or just stays close to the pad, the Grove - Touch Sensor will output HI...