Package Includes: 1x Screw Terminal Block Breakout Board, 1x Screw Kit, 1x Screw Driver, 1x Assembly Instruction. The 5V power light is red, while the 3.3V power light is pink, the light of the special function pin is dark blue, and the indicator light of the ordinary GPIO pin is light blue, which is convenient and convenient for connection Observing the state is a good helper for electronic experiments.The positions of the LEDs correspond to the positions of the 2x20pin connectors of the Raspberry Pi. The status information of the pin is displayed. When the GPIO pin is operated and effective in the terminal, the LED matrix on the right side of the terminal will display the status of the GPIO pin, and some distinctions are made in the color selection of the LED lights. It is convenient for everyone to connect when doing electronic experiments. Terminal Block Pitch is 3.5mm. Wire Gauge Range is 16 to 26AWG.Stripping Length is 5mm.There is the pin out information of the GPIO pin on the top of the terminal and on the side. This is a very beautiful screw terminal expansion version, which is expanded for the pins of the Raspberry Pi. Compatible with Raspberry Pi 4B/3B+/3B/2B/B+/Pi Zero/Pi Zero W/Pi Zero 2 W.