使用注意事项：
Use precautions:
① 加热棒在空气中切勿通电。因其在空气中升温极快，轻则烧坏加热棒，重则炸碎玻璃或烧伤手。即使断电后也不能立刻从水中拿出来，这时候的温度也是非常高的，同样容易烫伤人和烧坏加热棒。
The heating rod should not be electrified in the air. Because it warms up very quickly in the air, it burns the heating rod lightly and breaks the glass or burns the hand heavily. Even if the power is cut off, it can not be taken out of the water immediately. At this time, the temperature is very high. It is also easy to burn people and burn heating rods.
② 建议双金属片加热棒使用一至两年就更换，因为其内部的双金属片使用时间久了容易失灵，免得发生一些不必要的损失。更换下来的加热棒作为备用，也可用于换水时加热使用。
(2) It is suggested that the bimetallic heating rod should be replaced after one to two years of use, because the bimetallic sheet inside the heating rod will easily fail over a long period of time, so as to avoid some unnecessary losses. The replaced heating rod can be used as standby or for heating when water is changed.
③ 加热棒维修不划算，普通双金属片加热棒相对价格也不是很贵，维修后也不敢保证安全。分体的加热棒普通人没有能力维修，找专业人员维修价格不比买个新的加热棒少多少钱。
(3) The maintenance of heating rods is not cost-effective, and the relative price of ordinary bimetallic heating rods is not very expensive, and the safety is not guaranteed after maintenance. Separate heating rod ordinary people do not have the ability to repair, find professional repair price is not much less than buying a new heating rod.
④ 换水时注意不要使水位过低露出加热棒
4. Be careful not to expose the heating rod too low when changing water.
⑤ 经常观察加热棒和温度计，不要依赖加热棒的指示灯，应以水温为准。
Often observe the heating rod and thermometer, do not rely on the indicator lamp of the heating rod, should be based on the water temperature.