DIY is ok
冷氣冷度控制開關(基本款)NT$500
http://www.smart-party.com/shop/product_info.php?cPath=25&products_id=350&osCsid=49f9f28d6221c0f2edeb8c2d88ef3be0
冷氣冷度控制開關(豪華款)NT$1200
http://www.smart-party.com/shop/product_info.php?cPath=25&products_id=351&osCsid=49f9f28d6221c0f2edeb8c2d88ef3be0