Khay gắn pin 9V đầu cắm 5.5X2.1, nguồn điện cho bảng mạch Arduino

Great kit to supply power to your breadboard's power supply Connector plug for Arduino colour:Black size:5.5mm X 2.1mm Material:ABS Package Contents: 1 x Battery Holder Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.