AA-04 Audio Alert

Compact Audio Alert System

The Audio Alert system is a local public address – PA system – for automatic announcements, warnings, information, or instructions suitable for indoor use.

Integrate into Interlock® control systems

  • Fully custom messages, repetition, and volume
  • Line-out to external audio equipment
  • Safe at 24VDC low voltage
  • Professional, compact, wall-mounted design


The Audio Alert system is a local public address system that audibly delivers a pre-programmed message when triggered. The message is heard from a speaker integrated into the compact unit, which is triggered – either at start up or by movement being detected by a passive infrared detector built into the unit.

This speaking message can be up to 40 seconds long and can be set to automatically repeat as frequently or infrequently as required for up to an hour.

The AA-04 Audio Alert system is suitable for use in indoor environments. The low voltage 24VDC sounder unit has an integral speaker and can be used either as part of an Interlock® control system or for virtually any other relevant application indoors.

Audio Alert
Audio Alert with Passive Infrared Detector

Standard units, AA-04, are triggered at start up to deliver messages. The AA-04-PIR is triggered by passive infrared detection, the unit will only deliver messages when any movement is detected in the vicinity,

The audible warning device is contained in an attractive compact wall-mounted unit, and can act as a local public address PA system.

The provision of an audible message enables the loudspeaker feature to be incorporated into hospitals, offices, engineering establishments, doctor’s or dentist’s waiting rooms or other interior environments. The audible warnings or messages can complement any visual warning signs.

The Audio Alert System makes life easier. It can deliver audible warning messages to complement visual warnings.


The Audio Alert is safe using just 24VDC power and can be integrated to an Interlock® Controller or Interlock® Control System to provide an audible warning in addition to any visual warning signs being used.

Lasermet Audio Alerts are ready for full integration with other Lasermet interlock equipment. We can provide a fully safe turnkey solution to suit any need.


Pre-programmed at Lasermet – with virtually any message – and volume adjusted during on-site installation or before delivery – the Audio Alert has an almost limitless applications indoors. This does virtually everything an interlocked automatic audible alert system should do.

The repetition and volume of the audible announcement can be adjusted internally during the installation process or in-house at Lasermet before shipment. To prevent tampering of the volume, the adjustment feature is kept within the unit.

If the device is used in a temporary situation it can be returned to Lasermet to be reprogrammed with an alternative message.

Ordering Options

Part NumberDescription
AA-04Standard Unit
AA-04-PIRStandard Unit with Passive Infrared Detector

The AA-04 Audio Alert is only intended for indoor use.

For outdoor applications, check out our IP65 rated AA-05 Audio Alert units.

Additional information

Power Supply


Power Consumption

20mA (0.48W) Standby
300mA (7.2W) Active


160w x 108h x 39d mm