AUTOMATIC ELECTRICAL CONTROLS FOR HOUSEHOLD AND SIMILAR USE. PART 2: PARTICULAR REQUIREMENTS FOR AUTOMATIC ELECTRICAL WATER LEVEL OPERATING CONTROLS OF THE FLOAT TYPE FOR HOUSEHOLD AND SIMILAR APPLICATIONS.
家用和类似用途的自动电气控制装置 第2部分:家用和类似用途浮子式自动电动水位操作控制器的特殊要求