Mô-đun bàn phím ma trận 4x4 3x4 dùng phím PIC AVR cho bộ điều khiển Arduino

Hello everyone, our company is in Shenzhen。we specialize in selling electronic components. When we receive your order, we will process your order within 24 hours. If you order many items, we may need more time to process, it will not be more than 5 days, please be patient. Genaral it need 1-2weeks arrive your hand.if you chat with us , we donot reply you, donot worry , we are try to handle your order.so pls donot cancel order.