The ANS04 Ambient Noise Sensor adjusts the level of public address announcements based on a measure of the ambient noise in the PA zone. This ensures the public address audio is set at a volume above the ambient noise – in order to guarantee intelligibility of announcements, yet at a comfortable level. The unit interfaces via a BMB01 Remote I/O Unit.


Aluminium Enclosure

The unit is housed in an IP65 rated die-cast aluminium enclosure, with the electronics and microphone being mounted on the front plate.

High & Low Range Settings

Operating with background noise levels from 55 to 95 dB(A), the ANS04ES can be used in wide range of applications and environments.

IP Rated

Rated to IP65 and installed in hundreds of demanding locations worldwide, the ANS04ES operates reliably whatever the conditions.


For more information on the ANS, download some of our datasheets or contact us.