What are the differences between a piezo versus an electromechanical audible alarm?
A piezoelectric alarm has a small profile, has no moving parts, is less susceptible to wear and component fatigue, is more environmentally secure, can perform in marine environments, draws very little current (in many cases 1/10th that of electromechanical devices), and has the flexibility of producing higher sound output when greater input voltage is applied. On the other hand, electromechanical alarms have a number of mechanical, moving parts, are susceptible to wear, component failure and the elements, particularly humidity, fresh and salt water. They also consume a significant amount of current, and in order to produce more sound, even more current is required. In addition, they are often significantly larger due to the size, nature and number of component parts.
