热水循环装置RCD-XH/RCD-XH(F)外置循环泵热水即开即来无需等待热水即开即来无需等待24小时预约功能，调节方便冷水管路循环加热，节约用水是和厨卫不相邻及多卫生间房型使用产品型号：RCD-XH/RCD-XH(F)适用电源：AC220V/50H...