Maintain Car Alarm

I was talking about how to choose a right car alarm system yesterday, and now i realise that it is not enough to have the right car alarm system without "take care" of it. Am i right?

But how to maintain a car alarm? I went to a car accessories shop last night after finish working. The workshop assistant told me that it is pretty simple to maintain car alarm..I would like to share the basic knowledges with you as below :-

1. As we know, car alarm could function well if battery is in good condition. Therefore, we need ensure that car's battery contacts are clean and terminals are free of corrosion.

2. Examine the car alarm components under the hood periodically.

3. Lubricate the pinswitches of the hood and doors periodically to avoid from malfunctioning.

4. Avoid water from the outdoors as it can affect the life of the siren.