Randomizer wrote: ↑Fri Jun 09, 2023 7:04 pmThe low voltage cutoff is only a feature of the newer units. You can also find examples of ASC electronic sirens exhibiting sputtering with no cut-off as ASC sirens still, to my understanding, do not have a low voltage cut off feature (example: https://www.youtube.com/watch?v=KWO6LjtyoH4).
Whelen supposedly had low-battery cutoff starting on the controllers after the WS-1000, ("pre-864") according to the numerous manuals I have. whether it actually works, after 30+ years I am unsure.