Mon Apr 16, 2018 8:57 pm
Im curious to know what the diameter of the cells are on Whelen omni sirens.
Proud owner of a Federal Sign & Signal Thunderbolt 1000A, Federal Sign & Signal Model L, Darley Model 2-120 and a Model 120 from the San Onofre Nuclear Power Plant.
Model 120 wiki:
https://wiki.airraidsirens.net/Model_120