STI Beam Smoke Damage Stoppers...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$25.71
STI Beam Smoke Damage Stoppers – Protective Wire Guards for Beam Detectors

STI Beam Smoke Damage Stoppers – Protective Wire Guards for Beam Detectors

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Model: STI-9623

In Stock (leaves warehouse same day if ordered before 3pm ET)

$25.71
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STI Beam Smoke Damage Stoppers – Protective Wire Guards for Beam Detectors

STI Beam Smoke Damage Stoppers are heavy-duty wire guards designed to protect beam-type smoke detector components, including transmitters and receivers, from vandalism, impact, or misalignment. Built with 9-gauge welded steel wire and coated with a corrosion-resistant polyester shell, these guards are ideal for large indoor spaces such as gymnasiums, warehouses, and auditoriums. Each model is tailored to fit a specific detector type and includes mounting hardware for fast installation.

Key Features

  • 9-gauge welded steel wire construction
  • Corrosion-resistant polyester coating
  • Compatible with major beam detectors: System Sensor, Fireray, Xtralis
  • Protects against tampering, misalignment, and physical damage
  • Mounts vertically or horizontally
  • Fast, easy installation with included clamps and anchors
  • Indoor use only
  • Three-year guarantee against breakage

 

MODEL HEIGHT WIDTH DEPTH
STI-9623 7.75 in. (196mm) 6 in. (152mm) 6 in. (152mm)
STI-9624 8.875 in. (225mm) 5.5 in. (140mm) 4.75 in. (120mm)
STI-9706 10.82 in. (275mm) 9.32 in. (237mm) 4 in. (120mm)
STI-9707 11 in. (280mm) 9.62 in. (244mm) 5.5 in. (140mm)

 

Manufacturer Resources

VIEW SPEC SHEET

Product Specs

Accessories:
KIT-82 Tamper-resistant screws, KIT-19038 Tamper bit
Application:
Protects beam smoke detectors in gyms, warehouses, auditoriums
Certifications:
N/A (Protective wire guards, not electrical components)
Environment:
Indoor use only
Parent SKU:
STI-BEAM-SMOKE-DAMAGE-STOPPER
Product Line:
STI Beam Smoke Damage Stopper® Series
Protection:
Shields beam smoke detector transmitters & receivers from impact & damage
Warranty:
3-Year Guarantee Against Breakage in Normal Use
Product Model:
STI-9623, STI-9624, STI-9706, STI-9707, STI-9845, STI-9846
Product Group:
Safety
Product Subgroup:
Protective Covers
Product Type:
Beam Smoke Damage Stoppers – Protective Wire Guards for Beam Detectors
Department:
Safety
Product Dimension:
Vary by model (6.57"–11" H, 5.5"–11.6" W, 4"–5.6" D)
Installation Options:
Flush or Surface Mount (varies by model)
Product Material:
9-gauge welded steel wire with corrosion-resistant polyester coating

Parts & Accessories

    Safety Technology International STI-9623 – Frequently Asked Questions

    1) Which beam smoke detectors do the STI Beam Smoke Damage Stopper guards fit?
    Each guard in the STI Beam Smoke Damage Stopper series is built for one specific detector, so you pick by what is on the wall. The available fits are System Sensor 1224 in a flush version and a surface version, DS240 and DS241, Fireray 50/100 R, Xtralis OSID-R, and a generic beam detector guard for heads that don't match a dedicated model. Getting this wrong is the usual ordering mistake here, since the cages are sized to the housing rather than being one universal box.
    2) My beam detector is mounted flush in the wall, not on a surface box. Does that change which STI guard I order?
    It does, on the System Sensor 1224. There are two separate guards, one for the flush-mounted 1224 and one for the surface-mounted 1224, and the mount style is the option you select. Across the series, mounting is flush or surface depending on the model, so the way the detector sits on the wall decides the part number as much as the detector brand does.
    3) Will a wire guard block or interfere with the beam from a projected beam smoke detector?
    The Beam Smoke Damage Stopper is an open welded wire cage, not a solid cover, and it is sized to the specific detector it protects, including the transmitter and receiver heads. It shields those heads from impact and physical damage while leaving the optical path open. That is the whole reason these are model-specific rather than universal: the cage geometry has to clear the lens on the detector it was built for, which is why you order by detector, not by size.
    4) Can I install STI beam detector guards on a covered outdoor loading dock or an unheated parking structure?
    No. The Beam Smoke Damage Stoppers are rated indoor use only, so a covered dock, an open parking deck, or anywhere exposed to weather is outside what these are built for. The polyester coating over the 9-gauge welded steel is corrosion resistant, which helps in a damp gym or a dusty warehouse, but corrosion resistant is not the same as an exterior rating. Keep them to enclosed spaces.
    5) Do I need to buy mounting hardware separately for an STI beam detector guard?
    No, the clamps and anchors come with the guard, so a single part number gets you a complete install. What is not in the box is tamper-resistant fastening: if the guard is going somewhere students or the public can reach it, add KIT-82 tamper-resistant screws and the KIT-19038 tamper bit to drive them. Ordering the guard without the bit is the common miss, since you cannot install or later remove those screws with a standard driver.
    6) Are these steel guards strong enough for a school gymnasium where balls hit the walls?
    That is exactly the application these were built around. Construction is 9-gauge welded steel wire, and the stated use is protecting beam smoke detectors in gyms, warehouses, and auditoriums, against vandalism, impact, and knocking the detector out of alignment. Misalignment is the failure a facilities team actually cares about here: a beam detector that gets nudged goes into trouble and the panel reports it, so a struck but undamaged head still means a service call the guard would have prevented.
    7) Can an STI beam detector guard be mounted sideways if the detector sits horizontally on the wall?
    Yes. The Beam Smoke Damage Stopper guards mount either vertically or horizontally, so the orientation of the detector head does not force a different part. What does force a different part is the mount style on the System Sensor 1224, where flush and surface are separate guards.
    8) Does adding a wire guard over a smoke detector affect its fire alarm listing?
    The Beam Smoke Damage Stoppers are protective wire guards, not electrical components, and they carry no rating of their own. They mount over the detector and do not connect to it or to the panel, so nothing in the guard is part of the detection circuit. If your AHJ has a position on guards over initiating devices, that is a question about the detector's own listing and your local code, not about the cage.
    9) How do I stop people from just unscrewing the detector guard and taking it off?
    Fasten it with KIT-82 tamper-resistant screws and keep the KIT-19038 tamper bit on the truck, since that bit is what drives them and what you will need to get the guard back off for detector service. The cage itself is welded 9-gauge steel with a polyester coating, so the fasteners are the weak point in a public corridor or a gym, not the wire.
    10) I need to protect both ends of a beam detector system. Do I order one guard or two?
    Beam smoke detection uses a transmitter and a receiver at opposite ends of the space, and the guards protect both, so cover each head you want protected with its own guard. On a reflective type system the reflector at the far end is the other exposed component to think about. Order by the head model at each location, since the cages are detector-specific.
    How fast can I get the Safety Technology International STI-9623 delivered?
    Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
    Can I return it if it doesn’t work for me?
    Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
    Does the Safety Technology International STI-9623 come with a warranty?
    Absolutely. The Safety Technology International STI-9623 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
    How do I get technical support or installation help for the Safety Technology International STI-9623?
    You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
    Why buy the Safety Technology International STI-9623 from ZenSupply?
    ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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