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Alertronic Siren Signal Formats

The AL-Siren Series by ASC is designed for community, industrial, nuclear, petrochemical, or other applications that require high levels of sound pressure level output with superb acoustical performance and brilliant voice notification broadcasting. The AL-Siren Series can be activated locally or from a central point using radio or land line. Multiple sirens can be activated from a central point. An encoder located at the central point transmits activation codes to the siren decoder that initiates the proper tones or pre-recorded voice messages. The electronic control decoders are programmable for various tone out protocols, including TTS, DTMF, and FSK. Any of 10 standard or 6 optional customized tones can be activated. ASC can also provide all electrical control components factory configured, reducing field installation mistakes and siren installation time and cost.


Signal Format

  Frequency of Operation Sweep Rate

ALERT

670 Hz Steady Tone 3 minutes

ATTACK

740 Hz Tone, ramping up and down, :06 up and :05 down 6 sec. up and 5 sec. down for 3 minutes

HI / LO

550 Hz Tone alternating with a 740 Hz Tone .75 sec. duration per tone for 3 minutes

AIR-HORN

740 Hz Tone 2 sec. on, 2 sec. off for 3 minutes

FIRE

740 Hz Tone ramping up and down, minimum during down ramp 16 sec. up base, down for 1.5 minutes.

GROWL

533 Hz Tone burst with fade up and down 1/2 sec. (for siren test)

HAZARD

500 Hz Tone ramping up to 850Hz 1 sec repeating for 3 min.

CHIME

533 Hz Tone bursts 2 sec. intervals of 6 cycles

SCREAM

850 Hz Tone ramping down to 500 Hz, then back up to 850 Hz 0.8 sec. down, 0.2 sec. up for 3 minutes

WAIL

850 Hz Tone ramping down to 500 Hz, then back up to 850 Hz 0.8 sec. down, 0.2 sec. up for 3 minutes

All tone duration times may be adjusted via software. In addition to the standard signals above. Six Additional tones may be programmed to generate almost any tone or sequence. All tones may be activated from the CompuLert software running on a PC.

Features | Siren Design Characteristics | Installation | Field Programming | Optional Siren Equipment

American owned and operated
American Signal Corporation, originally known as ACA or Alerting Communicators of America has been designing and manufacturing warning systems and providing clients with turn-key installation services for almost 60 years. In 1982, we became the first company in the industry to provide a wireless digital supervisory control and data acquisition (SCADA) system called CompuLert™ with over 6000 installations world-wide. The advancements in the siren designs include battery operation, high powered Voice/Sirens, indoor alerting systems and with the experience in the wireless field, American Signal has the expertise to meet virtually any warning system project goal.

Our engineering and system specialists work hand in hand with clients to assist in the development of the project scope, so that we understand and are able to meet the goals of our clients. Our client base includes municipal governments (Village, Town, City, County and entire Countries), industrial facilities, and military bases. When our clients make the decision or commitment to provide their constituents or employees with emergency notification, whether natural disaster or man made, American Signal can take you from start to finish. We can coordinate efforts from needs assessments, acoustical surveys and technical proposals, to radio system back-bone studies, installation and service/maintenance contracts.  
In our new production facilities we have the ability to respond to customer lead time requirements quicker and with more consistency than our competition and we would welcome the opportunity to respond to you.

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More on the AL-Series Siren
Features

System Specs

Siren Design

Installation

Field Programming

Optional Siren Equipment

Signal Format

Download AL-Series PDF

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Acoustical Rating at 100 ft
AL-1000 108dB
AL-2000 112dB
AL-4000 116dB
AL-6000 121dB
AL-8000 126dB

Information
Catalog
E-Mail  for a copy of our complete catalog and price list.

 

Hot Tip
AC utility power can fail during storm conditions. Be prepared with the TEMPEST™ Series of outdoor warning sirens

 

Contact an ASC representative to assist you in project scope development, system design, specification, and turn key system implementation.

 

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