Home > categories > Security & Protection > Alarm > Classification of sirens
Question:

Classification of sirens

Classification of sirens

Answer:

3, pneumatic alarm: the electrical energy into mechanical energy, and then converted into mechanical energy by the mechanical energy. From gas to energy
2, electro-acoustic alarm: the audio small signal amplified by low-frequency power into sound energy. That is, electrons can be converted into acoustic energy.
1, electric alarm: the electrical energy into mechanical energy, and then converted into acoustic energy by the mechanical energy.

Share to: