Infrared Perimeter Silent Alarm

  • USA Made
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Infrared Perimeter Silent Alarm

This device is a tripline-activated early warning intrusion detector which alerts the observer while the intruder remains unaware that he has activated the alarm signal. Utilizing infrared light technology, its 940nm signal is invisible to the naked eye yet very visible to night vision scopes and low-light cameras. It produces a unique pulse rate that easily distinguishes it from nearby ambient light sources. The signal can be seen up to one mile away with 3rd generation night vision viewers. Easy to operate and weather-resistant. Powered by one 9-volt battery. Size: 5” x 1.9”. Made in USA.

What's Includes

  • Mounting hardware
  • 75 ft spool of Dyneema® trip line
  • Camouflaging sleeve
  • 9-volt Battery
  • * Night Vision Not Included. *

Product Specs

  • Weather-resistant
  • Powered by 9-volt Battery
  • Size: 5" x 1.9"
  • Made in USA
  • PLEASE NOTE: We are not able to ship Internationally. Your order will be automatically deleted and refunded. 

Customer Reviews

Based on 4 reviews
Doc Spencer
Nice System

This thing really puts out the light. I have a Gen 3+ NVD and in my living room it was so bright that I needed to use my safety cap when I tripped the unit and tried to rearm it. Outside I checked it at 50 yards and it was crazy bright. I would hate to wonder up and trip one of these if I had NODS as I think it would throw enough bright light out to temporarily stop or confuse you. I have a ton of 5th Ops perimeter devices and this was definitely a good addition to my ops package.

Glen L.
Love fith ops

I can never go wrong with fith ops
Every product is legit!

Gary W.
I R Perimeter alarms.

They are in place and nothing has tripped them yet. I guess that’s good news.

Works, but not a strong casing...

Just got these today and experimented... the plastic casing feels softer than a soda bottle, and when they say “weather resistant” they do NOT mean waterproof. 🤨

I feel as if this could be so much better a product if they just improved the plastic tubing quality... it certainly was visible under NOD’s...

When tested indoors, in a dark room, the strobing effect was very disorienting could possibly double as a blinding device to those with NODs indoors. Think “flashbang” except just “flash”...

When taking the insert out to install the 9-volt battery, you must be careful installing it back since the insert must align exactly with the plastic hole for the trip cord.

Make sure if you install this somewhere, you can keep it out of the rain mostly.