STI products
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STI Universal Stopper® Low Profile without Horn - STI-14010NY
Low-profile, flush-mount protective enclosure designed to guard door intercoms, keypads, emergency buttons, and communication devices in both indoor
- Flush-mount polycarbonate enclosure protects intercoms and keypads in indoor/outdoor use.
- Runs on 24VDC with relay output supporting 12–24VDC switching logic for access control integration.
- No-horn, no-label configuration suits deployments where alarms are managed by separate system components.
Usually Ships in 2-3 Weeks Free shipping over $499$74.08 $73.99 Save $0.09 -
Save $0.69
STI Universal Stopper® Low Profile without Horn - STI-14010FR
Low-profile, flush-mount protective stopper designed for fire-rated manual alarm stations, emergency intercommunication points, and access control
- Fire-rated label meets life-safety compliance for regulated facility deployments.
- Runs on 24VDC, integrating directly with standard access control power supplies.
- Horn-free design suits sites where audio is centrally managed or aesthetics are critical.
Usually Ships in 2-3 Weeks Free shipping over $499$67.68 $66.99 Save $0.69 -
Save $0.86
STI Stopper Enclosed Back Box - STI-13520FR
Universal stopper intercom unit combining door retention with integrated horn and two-way communication capability
- Runs on 24VDC, integrating directly into standard access control panel infrastructure.
- Combines door retention, horn notification, and two-way audio at a single mount point.
- Enclosed back box shields terminals, reducing termination complexity during rough-in.
Usually Ships in 2-3 Weeks Free shipping over $499$219.85 $218.99 Save $0.86 -
Save $0.73
STI 13510FR Stopper - Enclosed Back Box
24VDC intercom without horn, enclosed box, open mount dome profile
- Open mount design with dome low-profile option for standard access control frames
- Enclosed back box configuration rated IP56 for protected outdoor/indoor installations
- 24VDC operation integrates into existing door access and intercom systems
Usually Ships in 2-3 Weeks Free shipping over $499$151.72 $150.99 Save $0.73 -
Save $0.15
STI Universal Stopper® without Horn Housing, Enclosed Back Box, Op...
24VDC intercom for entry gates and access points, no horn housing
- Enclosed back box design protects wiring and components at installation
- 24VDC powered operation integrates into standard access control systems
- IP54 rated for reliable performance in outdoor and semi-exposed locations
Usually Ships in 2-3 Weeks Free shipping over $499$143.14 $142.99 Save $0.15 -
Save $0.86
STI 13420FR Stopper Horn
Intercom with integrated horn, 24VDC dome mount, weatherproof sealed box
- Dual communication and alarm—voice intercom paired with horn signaling
- IP56 weatherproof enclosure handles outdoor mounting in harsh conditions
- 24VDC powered; integrates directly with access control infrastructure
Usually Ships in 2-3 Weeks Free shipping over $499$219.85 $218.99 Save $0.86 -
Save $0.73
STI Universal Stopper® without Horn, Enclosed Back Box, Sealed Mou...
24VDC intercom for access control without horn output
- Dome low-profile mount with enclosed back box and sealed housing
- IP56-rated sealed mount prevents environmental contamination
- Integrates into standard access control and entry communication systems
Usually Ships in 2-3 Weeks Free shipping over $499$151.72 $150.99 Save $0.73 -
Save $0.15
STI Universal Stopper® without Horn Housing, Enclosed Back Box, Sea...
Compact 24VDC intercom for STI access control systems
- Enclosed back box design fits recessed or wall-mounted installations
- 24VDC operation integrates into standard security infrastructure
- IP54-rated for use at entry points and facility access checkpoints
Usually Ships in 2-3 Weeks Free shipping over $499$143.14 $142.99 Save $0.15 -
Save $0.07
STI Universal Stopper® without Horn Encl. Flush - STI-13310FR
Flush-back-box protective enclosure designed to shield manual fire alarm stations, emergency call stations, intercoms, keypads, and other access
- Flush back box mounts recessed into wall for a low-profile, ADA-compliant install.
- UV-stabilized polycarbonate dome keeps protected devices visible without yellowing.
- Runs on 24V DC, integrating directly with standard access control power supplies.
Usually Ships in 2-3 Weeks Free shipping over $499$115.06 $114.99 Save $0.07 -
Save $0.30
STI STI-1331 Universal Stopper® Electric Strike
Universal Stopper® electric strike for retrofit and new access control installations
- 9VDC operation integrates with standard access control relay systems and battery backup
- Universal Stopper® design fits multiple door frame types without custom modifications
- Wall-mount configuration supports both retrofit and new installation deployments
Usually Ships in 2-3 Weeks Free shipping over $499$25.29 $24.99 Save $0.30 -
Save $0.10
STI Universal Stopper® with Horn & Relay Surface - STI-13230NB
Surface-mount protective stopper housing that integrates relay and horn functionality into a single compact unit
- Surface-mount housing protects keypads, intercoms, and alarm stations from vandalism.
- Operates on 24VDC with relay output accepting 12–24VDC for mixed-voltage installations.
- UV-stabilized polycarbonate build supports both indoor and outdoor deployment.
Usually Ships in 2-3 Weeks Free shipping over $499$203.09 $202.99 Save $0.10 -
Save $0.76
STI Universal Stopper® with Horn & Relay Surface - STI-13230FR
Surface-mounted mechanical stopper with integrated 24VDC horn and relay output, designed to secure and audibly signal control of fire alarm stations
- Integrated 24VDC horn delivers audible alerts without a separate notification device.
- Relay output supports fire alarm panels, door strikes, and intercom logic at 12–24VDC.
- Polycarbonate surface-mount cover protects keypads and intercoms from vandalism and weather.
Usually Ships in 2-3 Weeks Free shipping over $499$203.75 $202.99 Save $0.76 -
Save $0.13
STI 13230CY Stopper Horn Relay
Surface-mount horn & relay control for STI intercom systems
- 24VDC integrated horn and relay for audible alerts and automation
- Surface mount design fits secure entry points and access corridors
- Custom label support for facility-specific identification and wayfinding
Usually Ships in 2-3 Weeks Free shipping over $499$203.12 $202.99 Save $0.13 -
Save $0.38
STI Universal Stopper® without Horn Housing - STI-13200NC
Surface-mount intercom station, 24VDC, clear dome for access control
- IP56-rated clear dome enclosure fits door and wall installations discreetly
- 24VDC operation integrates with STI Universal Stopper system architecture
- Low-profile design supports retail, commercial, and institutional deployments
Usually Ships in 2-3 Weeks Free shipping over $499$71.37 $70.99 Save $0.38 -
Save $0.40
STI STI-1314 Universal Stopper® Backplate
- Provides standardized mounting interface for Universal Stopper® electric strike systems.
- Operates on 9VDC, simplifying power integration into existing access control infrastructure.
- Suits commercial and institutional door hardware deployments requiring electric strike control.
Usually Ships in 2-3 Weeks Free shipping over $499$21.39 $20.99 Save $0.40 -
Save $0.74
STI STI-13020CB Universal Stopper with Horn Flush Intercom
24VDC flush-mount stopper with integrated horn and intercom
- Universal stopper design fits multiple door frame types and mounting configs
- Integrated horn and intercom for audible alerts and two-way communication
- Flush-mount option supports both surface and recessed installation
Usually Ships in 2-3 Weeks Free shipping over $499$136.73 $135.99 Save $0.74 -
Save $0.50
STI 13000NC-FR Stopper Flush Clear
Flush-mount TCP/IP intercom stopper, 24VDC, clear housing
- TCP/IP network integration for access control and two-way communication
- Flush mount design fits discrete installations with low-profile dome form
- 24VDC powered with IP56 rating for standard security infrastructure
Usually Ships in 2-3 Weeks Free shipping over $499$53.49 $52.99 Save $0.50 -
Save $0.40
STI Backplate for Stopper II® and Weather Stopper® - STI-1280
Replacement backplate engineered for STI Stopper II and Weather Stopper series electromechanical locks
- Runs at 9VDC, integrating directly with standard access control power supplies and battery backup.
- Compatible with both Stopper II and Weather Stopper II series for interior and exterior deployments.
- Accommodates weather gasket seal when used with Weather Stopper II, supporting outdoor installations.
Usually Ships in 2-3 Weeks Free shipping over $499$21.39 $20.99 Save $0.40 -
Save $0.47
STI Stopper II Espaciador - STI-1230-ES
Stopper II spacer component designed for STI emergency communication installations where siren functionality is not required
- Spaces and aligns Stopper II assemblies in wall- or surface-mount enclosures.
- Spanish labeling supports multi-language facilities and Spanish-speaking deployments.
- Passive component; no special tools or torque specs required for installation.
Usually Ships in 2-3 Weeks Free shipping over $499$102.46 $101.99 Save $0.47 -
Save $410.84
STI Stopper® Dome Heated Enclosure for - STI-1229HTR240-HAZ
Type 4X heated protective dome enclosure sized for strobe-only warning appliances in hazardous or harsh outdoor environments
- 240V heating element prevents frost and condensation, maintaining strobe visibility in freezing conditions.
- Type 4X NEMA rating seals against outdoor moisture, dust, and environmental exposure.
- Fits AMSECO SL24W-153075 strobe pattern; mounts via six #8-32 socket cap screws to solid backing.
Usually Ships in 2-3 Weeks Free shipping over $499$1,052.83 $641.99 Save $410.84







