STI 1221D Stopper Dome and Strobe Damage Stopper and Open Back Box with Conduit Knockout
Special Order: typically 2–6 weeks
Ships directly from the manufacturer. This is an estimated lead time, not a guaranteed delivery date.
Availability can change and lead times may be longer. If your project has a deadline, check with us before ordering.
A member of our team will check with the manufacturer and personally reply by email.
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Key Features
- Heavy-duty clear polycarbonate shields strobes and horns from vandalism, weather and UV — preserving signal visibility and reducing downtime
- Enclosed back box with conduit knockout speeds surface-mount installation and simplifies low-voltage wiring for fire and security systems
- Transparent design maintains effective light output and ADA compliance while protecting devices in high-traffic areas
- UL/cUL Listed and MEA-approved for easier code compliance and faster inspections on commercial projects
- Easy service access and a 3-year limited warranty minimize maintenance time and provide long-term reliability
Quick Specifications
- Product Model
- STI-1221D
- Brand Name
- Safety Technology International
- Product Line
- Strobe Damage Stopper
- Product Name
- Damage Stopper STI-1221D Security Cover
Explore the details
Product information
STI-1221D
Overview
Protect critical notification devices and maintain reliable alarm performance with the Safety Technology International STI 1221D protective cover. Designed for commercial and institutional security, fire alarm and monitoring installations, this damage stopper provides tough, transparent protection that preserves strobe visibility while preventing vandalism, weather and UV damage. Constructed from thick polycarbonate (PC) with an enclosed back box and conduit knockout, the STI-1221D streamlines surface-mount wiring and keeps low-voltage connections secure. At 8.5" H x 6.5" W x 5.75" D the cover fits common horn/strobe units without compromising light output; it is UL/cUL Listed, ADA compliant and MEA 49-00-E approved for code-conscious projects. The clear dome allows visual monitoring of device status and offers easy access for service to reduce maintenance time. Ideal for schools, healthcare facilities, transit hubs and retail environments where surveillance, security and uninterrupted signaling are essential. Specify the STI 1221D for dependable protection of strobes and horns—contact your distributor to order or discuss installation details.
Features
- Heavy-duty clear polycarbonate shields strobes and horns from vandalism, weather and UV — preserving signal visibility and reducing downtime
- Enclosed back box with conduit knockout speeds surface-mount installation and simplifies low-voltage wiring for fire and security systems
- Transparent design maintains effective light output and ADA compliance while protecting devices in high-traffic areas
- UL/cUL Listed and MEA-approved for easier code compliance and faster inspections on commercial projects
- Easy service access and a 3-year limited warranty minimize maintenance time and provide long-term reliability
| General Information | |
|---|---|
| Brand Name | Safety Technology International |
| Manufacturer | Safety Technology International, Inc |
| Product Line | Strobe Damage Stopper |
| Product Name | Damage Stopper STI-1221D Security Cover |
| Product Type | Security Cover |
| Product Model | STI-1221D |
| Product Series | STI-1221 |
| Manufacturer Part Number | STI-1221D |
| Technical Information | |
| Material | PC |
| Device Supported | Horn, Strobe |
| Physical Characteristics | |
| Color | Transparent |
| Depth | 5.8" |
| Width | 6.5" |
| Height | 8.5" |
| Durability | Break Resistant, Damage Resistant, UV Resistant, Vandal Resistant, Weather Resistant |
| Form Factor | Surface Mount |
| Product Information | |
| Mount Type | Surface Mount |
| Warranty | |
| Limited Warranty | 3-Year |
| Miscellaneous | |
| Features | Conduit Mount, Surface Mount |
| Country of Origin | US |
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Is this right for your project?
Confirm the model, required accessories and delivery needs before ordering.
- SKU:
- STI-1221D
- Manufacturer part:
- STI-1221D
How do I confirm compatibility?
Check the specifications and manufacturer documents for your existing system. Send us your model numbers and project requirements if you need help selecting equipment or accessories.
Ask a product specialistWhen will this item ship?
Availability is shown above. Special-order items and project quantities may need additional lead time. Contact us to confirm a delivery date before scheduling installation.
Shipping, freight and delivery detailsWhat should I know about returns?
Returns require an approved RMA. Consult the linked return policy for deadlines and eligibility. For standard non-defective returns, eligible factory-sealed items carry a 15% restocking fee and customer-paid return shipping; open-box and used items are refused. Defective and DOA claims follow the policy's separate terms. Special orders and other exclusions are final sale.
Read return eligibility and exclusionsSTI 1221D Stopper Dome and Strobe Damage Stopper and Open Back Box with Conduit Knockout
STI-1221D