20 Button Emergency Microphone

The Zenitel EMS20 is a lockable wall-mounted emergency microphone station for Zenitel public address and voice alarm systems. It provides a dedicated handset-style fist microphone with push-to-talk operation and 20 physical selection buttons.

Main benefits and key functions

Its 20 selection buttons can be expanded to up to 50 using the optional EMX30 module. A built-in loudspeaker supports listen-in monitoring, and the microphone includes a graphic LCD. The station supports live messages, pre-recorded announcement triggering and interaction with the PAVA system. Visual and audible status indication is designed around the needs of supervised voice alarm installations. The locked enclosure provides a designated point for authorised use. Selecting the correct number of zone buttons lets the station match the operational paging plan without making the controls more complex than needed.

Typical applications

The EMS20 suits security control rooms, building management locations and other authorised emergency paging positions. It is especially appropriate for multiple destination choices and demanding zoning layouts. The selection layout is a key model difference: EMS01 is a simple all-call station, EMS10 has ten keys and EMS20 has twenty keys.

Connectivity and installation

Zenitel documents analogue/serial interfaces and IP connectivity options, with potential dual-host arrangements for resilience. The unit is supplied in a lockable wall enclosure; EMS01 and EMS10 are explicitly listed as IP30. Its EN 54-16 certification is stated as part of the Zenitel PAVA system. Confirm host router, connectivity route and any separately required expansion hardware during design.

Specification and purchasing guidance

For installers and specifiers, the EMS20 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 EMS20 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.