... ,sensor sanitary ware self-open and close water, hand free touching,avoid bacteria cross-infection.So its intelligent,automatic , ... solenoid valve ,battery box built- inside .Zinc alloy outer shell,small size,light n eight,easy to transport and cost less ... . 3.manufacturer OULON , RMXNZH Made in Fujian,China,from Xiamen Beiduo Induction Equipment Co.,Ltd ...