Fault Notification Device
The A500 provides notification of communication failure for critical applications such as Areas of Rescue and elevator communications and satisfies the requirements of ASME A17.1-2016 and NFPA 72-2019.  The A500 is described in NFPA 72-2019 as an “audible and visual notification appliance”.

A500 Cut Sheet



The A500 Fault Notification Device provides notification and the ability to communicate between local endpoints and local or remote responding endpoints has failed.

  • Failure notification within 200 seconds
  • Audible Alarm suspension
  • Re-alarm within 24 hours (if fault not removed)
  • Automatic reset when a fault is removed
  • POE and Alternate power

Click here for more information on our Area of Refuge System solution