1. 지향성 스피커 
https://smartstore.naver.com/inkelsaehan/products/3769691898 

---> 기성품 연결용 앰프 SPA-1050 

2. DC-DC 전압강하 모듈 
http://xn--e-pn9e73fo4c93z9wmk2j.com/product/detail.html?product_no=485&cate_no=51&display_group=1 

3. 50W 앰프모듈 
http://item.gmarket.co.kr/DetailView/Item.asp?goodscode=865472533&GoodsSale=Y&jaehuid=200001169&NaPm=ct%3Djtkwex6w%7Cci%3D4919e0f5232b33097168e278458c7563e2dbb47a%7Ctr%3Dslsl%7Csn%3D24%7Chk%3Dbf95b0d3713825dbf7a8fb780de863cebeb8b447 

4. 미니 MP3 모듈 
https://smartstore.naver.com/mechasolution_com/products/2977996993?NaPm=ct%3Djtkwqtfk%7Cci%3D0z00002KCnjqNyTYi10O%7Ctr%3Dpla%7Chk%3D847923f2c8ab90454d5ad8a982c4ebedecb9fd73 

5. 이더넷 모듈 
http://shop.wiznet.co.kr/front/contents/product/view.asp?cateid=62&pid=1263