SMD Decibel Sensor Mounting Guidelines

Decibel meters or sound level sensors can be categorized broadly into 2 types – surface mount and external microphone type. This decibel sensor mounting guide covers surface mount (SMD) type sensors only.

A surface mount or SMD decibel meter is designed such that it can be stuck to an enclosure and the meter reads audio levels through a hole in the enclosure.

An external microphone based sound level sensor uses an external microphone that is mounted outside an enclosure. The electronic module that processes the audio signals is located away from the microphone itself. This arrangement is preferable for deployment in harsh outdoor conditions. SMD modules are better used in indoor environments.