List of sirens built by Alerting Communicators of America

This article lists the outdoor warning sirens built by Alerting Communicators of America, Biersach & Niedermeyer Co., and American Signal Corporation.

Alerting Communicators of America sirens

Name	Type	Motor HP	Port Ratios	Years of Production	Sound Output Type	Notes
Allertor 125	Electro-Mechanical	10 (some 15)	8, 8/12, 9/12, 10/12	1968–1980	Rotating	Design changed at least three times throughout production. Most common port ratio is 9/12.
Cyclone 125	Electro-Mechanical	50	8/12	1968–1992	Omni Directional	Started off as a 120dB siren, design changed in 1980 to become 125dB.
Howler	Electro-Mechanical	10	9/12	1972–1977	Rotating
Hurricane 130	Electro-Mechanical (horn and blower)	2 (chopper) 25/30 (blower)	8/10, 10/10, 10/12	1968-1973 (square horn) 1973-1980 (round horn)	Rotating	Started off using a 25HP blower with a square horn, redesigned to 30 HP with round horn. Most common port ratio is 8/10.
Screamers	Electro-Mechanical	2, 3, 5, 7.5, 10	8, 9, 9/12	1968–1990	Omni Directional	Series of small vertical sirens, comparable to Federal Signal Corporation's Vertical sirens from the 1930s.
Sentry 95	Electro-Mechanical	2	5/5	1968–1969	Omni Directional
Banshee	Electro-Mechanical	10, 15, 25	8 and 9/12 (Banshee), 8/12 (Super Banshee)	1968–1994	Omni Directional	The 25 HP variant was a dual head vertical siren nicknamed 'Super Banshee'. Most common port ratio is 9/12, however, the Super Banshee was only available in 8/12.
Penetrators	Electro-Mechanical	10, 15, 50	8, 9/12 (P-10 and 15) 8/12 (P-50)	1980–1992	Rotating	10 and 15 HP models nearly the same, aside from motor used. P-50 was the loudest dual tone siren in the world.
Alertronic 4000	Electronic	none	none	1980–2007	Omni Directional	First non rotating electronic design by ACA.
Alertronic 5000	Electronic	none	none	1980's	Rotating	Very short lived siren, replaced by the 6000.
Alertronic 6000	Electronic	none	none	1992 to 2000's	Rotating	Replacement for the 5000. Came in 8 driver and 4 driver versions.
Performance + Penetrator	Electro-Mechanical	7.5	9	1989	Rotating	Made for Dane County, Wisconsin only.
PN20	Electro-Mechanical	20	9	1992	Rotating	ACA's last known rotating siren. More commonly known as the RM-130.

American Signal Corporation sirens

Name	Type	Motor HP	Port Ratios	Years of Production	Sound Output Type	Notes
OM-117	Electro-Mechanical	15	8	1994–Unknown	Omni Directional	Rebranded version of ACA's Banshee siren, only in the 15 HP version.
OM-120	Electro-Mechanical	Unknown	9	Unknown	Omni Directional	Very similar to the earlier ACA Banshee, but was higher pitched and with battery back up.
RM-127	Electro-Mechanical	15	8	1995–2000	Rotating	The same as the single tone Penetrator-15.
RM-130	Electro-Mechanical	20	9	1995–1999	Rotating	The same as the earlier PN20.
RM 135	Electro-Mechanical	50	8/12	1995–2006	Rotating	Continued from 1999 onwards as the T-135AC. The same as the earlier P-50. Discontinued around 2006 and replaced with the T-135 AC/DC in 2007.
C-125	Electro-Mechanical	50	8/12	1995–2006	Omni Directional	The same as the Cyclone 125.
AL line	Electronic	none	none	1995–present	Omni Directional	Similar to the Alertronic 4000, but now in different sizes.
RE-1600	Electronic	none	none	1995	Rotating	Same as the ACA Alertronic 6000.
Tempest Series	Electro-Mechanical	Unknown	8 (8/12 for T-135 AC)	1998–present	Rotating (128 and 135) Omni Directional (112 and 121)	Four sirens in this line up: T-112, T-121, T-128, and T-135 'Original T-135 was known as T-135 AC, which was a rebranded ACA P-50. The T-135 AC/DC is a bigger and more powerful of the T-128 and has a battery backup. This was introduced around 2007, replacing the T-135 AC.
Quadren	Electronic	none	none	1990's	Omni Directional	Renamed the iForce after being redesigned in the early 2000s.
E-Class	Electronic	none	none	2000's	Omni Directional	Speakers can be arranged in whichever pattern is needed.

Photos

• 
  RM-130

Head Shot of A P-50 The Small Tube is the air intake the "fluting" around the bottom of the chopper is the air exit

External links

• http://americansignal.com/