Bethany, OK
Bethany is a small town in Oklahoma County that has a system of 4 Federal Signal 2001-130s and a single ACA P-15. Bethany's old system consisted ACA Allertor 125s and Federal Signal 3T22s. The P-15 is the last siren remaining of their old system. The P-15 is single tone and reverse wired.
The sirens are tested every Saturday at noon, sometimes even mildly bad weather/rain.