Federal Signal Service Bulletins
Q-Siren tones in Non-Q Pathfinder Sirens
Service Bulletin regarding the Pathfinder Remote Head cold weather enhancements.
June 3, 2026
Issue:
It has been brought to our attention that some users are circumventing safety mechanisms that are designed into our siren programming software to load Q-siren
tones into standard Pathfinder sirens that were not designed for the Q-siren tone.
Pathfinder Remote Head (PF200R)
Service Bulletin regarding the Pathfinder Remote Head cold weather enhancements.
February 13, 2020
Issue:
In cold weather, some customers are reporting a startup delay in the PF200R (Pathfinder Remote) siren. This delay is caused by low current setting in the firmware of the communication chip within the PF200R control head.
A firmware upgrade is needed to enhance the cold weather operation (to -40 Celsius) of the Pathfinder Remote (PF200R) sirens.
Pathfinder software versions prior to version 2.2.0.0 are affected and will need to be updated.
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