A variety of types are available using mercury and non-mercury tilt switches and, also, permanent magnets and reed switches.

• 种类众多：分水银和非水银角度倾斜开关、以及永久性磁铁和磁簧开关等。常应用于污水处理，泵控系统，舱底污水处理，地下拱顶等作业和灌溉系统.