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

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
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