Ambient Noise Sensor

The Zenitel ANS04-ES is a wall-mounted ambient noise sensor for Zenitel VIPEDIA and INTEGRA public address and voice alarm systems. It is used to keep announcement output at a suitable level above measured background noise without making messages unnecessarily loud.

Main benefits and key functions

The built-in microphone measures ambient sound with speech-band weighting, and the system uses the result to set output gain. The sample-and-hold approach takes background measurements for use during announcements, rather than continually revising gain throughout a live message. This is the central distinction from the dynamic DANS01 sensor. The sensor helps set speech levels from the measured noise conditions rather than leaving all announcements at a fixed level. Where noise changes during messages, the distinct DANS01 dynamic method may be worth considering.

Typical applications

ANS04-ES suits public spaces, transport facilities, warehouses and other locations where the typical background noise level is significant. Zenitel specifies operation with ambient levels from 55 to 95 dB(A), supporting practical audio level control in a range of acoustic conditions.

Connectivity and installation

The sensor has a discreet IP65 wall enclosure with fail-safe operation and an extended operating temperature range from -40°C to +50°C. Zenitel confirms compatibility with VIPEDIA audio routers and INTEGRA equipment. Correct sensor placement and matching system configuration are important so readings reflect the noise in the announcement area.

Specification and purchasing guidance

For installers and specifiers, the ANS04-ES should be matched to the host equipment, cabling and operating conditions shown on the project drawings. Keep the model number in the system schedule so future maintenance teams can identify the correct version. Check any optional accessories separately rather than assuming they are supplied with the base product.

Summary

The Zenitel ANS04-ES offers a focused solution for its documented role. Its main strengths are the specific functions and compatibility described above, making it a practical choice when those requirements are part of the installation. Order the exact version that matches the system design.