To avoid fire, this product should be provided with 220v, 1a standard fuse. Before replacing fuse, cut off power and load.
为避免火灾，本仪器指定的标准保险丝规格是220v、1a，更换保险丝前，切断电源和负载。
2
This product is mainly used to protect the liquid level. It can switch off the power when the water level in the vessel is higher than the standard water level to reach the protection purpose.