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Fortress Internal Siren
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Fortress Internal Siren

SKU: White Siren
  • No Contract
    or Monthly Charges
  • 3 Year
  • 30 Day
    Satisfaction Guarantee
  • Description
  • Specifications
  • Features

The Fortress Internal Siren is a wired siren that plugs into the main panel of the security system directly. The 130 decibel loudspeaker will alert you and anyone else nearby that the alarm has been triggered.

  • 2.5mm connector
  • 6 foot cable
  • 130 decibel loudspeaker
  • 130 decibels
  • Plugs into the main panel - no other power needed
  • No programming required
  • 6 foot cable

In stock

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Fortress Internal Siren Description
Linked to the main control panel, this loud (130 dB) siren will instantly sound in case the alarm is triggered by one of the wireless sensors and continue between one and thirty minutes until the system is disarmed. Connected directly into the main system, it does not require a power adapter. Designed to deter intruders and quickly alert of security breaches, the alarm is extremely loud and it can be painful to stand in its proximity for any length of time.
Only one Internal Siren can be used with a system.
Reviews For This Product
See All 6 Reviews
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This little siren works as advertised!
Review by Cash T

It is very loud and my only issue was that I wanted the siren far away from the main panel which is hidden, so I had to splice in so additional wire. However, this is easy to do and the unit is cheap so I'm not concerned with any warranty issues in doing so. Worked as a great replacement for the siren that was previously hardwired in my residence.

5.0- Review
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Indoor Speaker
Review by Sue

This thing is LOUD!

5.0- Review
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Fortress securty system
Review by c

very easy to set up, easy to hide and loud enough to hear outside

5.0- Review
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Loud but wired...
Review by aid from Joplin, MO

Having the unit wired doesn't necessarily mean it's bad, it's just that the wire is a bit short(8') and this could lead intruders to the main panel to turn it off or unplug it. The upside is there's no interference with signals and it sounds immediately when the alarm goes off, compared to the wireless sirens, there is a delay. What I did was hook it up to an extra speaker cable I have laying around and ran it to the ceiling and pointed towards the soffit so the neighbors could hear when it goes off immediately. Im sure there are speaker extension cables with the right jacks/terminals that you could buy ready-made. I did the splicing and the good stuff since I didn't want to buy another cable

4.0- Review
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Works fine, very loud
Review by Charles

I wish the siren was not attached to the control panel. Could lead intruders directly to the computer room, where the panel, phone or router and modems could be damaged to silence the siren. The siren that is attached to the control panel is louder and more piercing than the remote horn. However, I bought the remote horn, never use the siren that came with the control panel. Would like to use them both.

4.0- Review
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ratings 4.7 Overall Satisfaction Rating Based on 374 Ratings from Actual Customers
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Nicole V

The site is hard to navigate mobile had to return to start several times

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Tyler H

Excellent online chat support. Answered all my questions.

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Terry M


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Jack H

Very easy to purchase and online chat makes it easy to get answers to almost any question. Videos are very helpful as well.

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Anthony M

I changed my ratings from 4 to 3. Paypal was supposed to make checkout faster. I had to answer too many questions! I just hope I'm not solicited to purchase something as well!

Verified Customer
Fortress Internal Siren

With the WiFi TSS and this internal siren, how does one turn off the arm/disarm chirp (which is far too loud)


Hi, Christian, To turn this feature off, go into the main panel and into Sensors. From there, go to Remote, and select the zones in which your key fobs are (probably the first few). In each zone, turn "sound" off (achieved by selecting the zone, then scrolling down into "sound"). Turning off "panel sound" in the bottom of each zone will disable the siren chirp when you use the main panel to arm or disarm, while turning off "sound" will disable it when you use the key fobs. This can be found on page 24 of the manual as well, in case you ever need it again! Let me know if I can answer any other questions! Regards, Amanda, Fortress Security Store


can I make the cable of the siren longer by cutting it and adding more cable? thanks


Hello Alejandro, You can extend the siren by attaching speaker wire to the siren wire. However, note that cutting the wire will void the warranty if the siren is damaged. Thanks, Jessica


does the siren operate on 12 VDC? If so what is the max siren current of the S02 Main panel?


Hello Joe, The relevant S02 alarm system main panel specifications are as follows: - Power Supply: AC: 220V±10%, DC: 9V - Alarm Current: ≤300mA Thanks, Kip

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