[Name]: Allertor 125
[Type]: Electro-Mechanical
[Motor HP]: 10 (some 15)
[Port Ratios]: 8, 8/12, 9/12, 10/12
[Years of Production]: 1967–1984
[Sound Output Type]: Rotating 125 dB at 100 ft.
[Notes]: Design changed at least three times throughout production. The most common port ratio is 9/12. The Allertor 125 can produce 2 tones. Alert and Attack (Wail). A third signal was also available, Yelp, which required a special type of motor and used a reversing magnetic starter.
(Alerting Communicators of America sirens)[Name]: AL-4000R
[Type]: Electronic
[Motor HP]: none
[Port Ratios]: none
[Years of Production]: 1995
[Sound Output Type]: Rotating 124 dB at 100 ft.
[Notes]: A modernized version of the ACA AL-6000R and RE-1600.
(American Signal Corporation sirens)[Name]: Penetrators
[Type]: Electro-Mechanical
[Motor HP]: 10, 15, 50
[Port Ratios]: 8, 9/12 (P-10 and 15) 8/12 (P-50)
[Years of Production]: 1982–1990 (Later continued as the RM series)
[Sound Output Type]: Rotating 124–135 dB at 100 ft.
[Notes]: 10 and 15 HP models nearly the same, aside from motor used. The P-50 was and still is the loudest dual tone siren in the world. The P-15 (Single-tone) and P-50 was still being produced by ASC until 2002 and 2007.
(Alerting Communicators of America sirens)[Name]: Quadren
[Type]: Electronic
[Motor HP]: none
[Port Ratios]: none
[Years of Production]: 1992–1995
[Sound Output Type]: Omni Directional dB rating depends on how many drivers.
[Notes]: One of the last electronic sirens made by ACA before their bankruptcy. Design was later bought by ASC, and later became the iForce.
(Alerting Communicators of America sirens)[Name]: RM-130
[Type]: Electro-Mechanical
[Motor HP]: 20
[Port Ratios]: 8
[Years of Production]: 1995–2002
[Sound Output Type]: Rotating 127 dB at 100 ft.
[Notes]: The same as the earlier PN20.
(American Signal Corporation sirens)[Name]: Screamers
[Type]: Electro-Mechanical
[Motor HP]: 2, 5, 7.5, 10
[Port Ratios]: 8, 9, 9/12
[Years of Production]: 1967–1990
[Sound Output Type]: Omni Directional 105–115 dB at 100 ft.
[Notes]: Series of small vertical sirens, comparable to Federal Signal Corporation's Vertical sirens from the 1930s.
(Alerting Communicators of America sirens)
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