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Ensure Fire Pull Stations are Code-Compliant in Wet Locations with the STI-1200A Fire Alarm Cover and Back Box

Jul 10, 2025 | Fire Alarm

STI-1200A Fire Alarm Cover for wet location pull station protection

Cut the Core Drilling: SDC WPT Wireless Power Transfer Device Makes Retrofits Easy

Messing with door cores is one of the biggest headaches for security dealers retrofitting electrified hardware—especially when dealing with wood or fire-rated doors. Fortunately, the SDC WPT Wireless Power Transfer Device solves that problem by delivering power and data across the door gap without any moving parts, wires, or core drilling.

Ideal for both retrofit and new construction, this RF-powered solution simplifies installations, minimizes vandal-prone wiring, and keeps projects on schedule. Whether you’re updating an older access control system or installing electric locks on a wood or steel door, the SDC WPT gives you the power—literally—to get the job done cleanly and compliantly.

Key Product Features

  • Wireless RF power transfer—no door core drilling required
  • Compatible with steel and wood doors
  • Transfers both energy and data (REX, DPS, latch status)
  • Visual LED status indicator
  • Field-selectable dual voltage output (12VDC or 24VDC)
  • Up to 1/4” (7mm) door gap tolerance
  • Flexible mounting on latch, hinge, or top frame
  • No moving parts or exposed wires—zero wear points
  • Adjustable unlock trigger (1–90 seconds)
  • Includes fixed 4-second unlock trigger for standard REX

Use Cases & Dealer Benefits

The WPT is a retrofit-friendly, code-compliant solution designed for:

  • Failsecure Electrified Locks and Latches: Power mortise, cylindrical, or rim locks without wiring hassles.
  • High-Traffic Doors: Reduce wear and tear from wire loops and moving parts.
  • Historic and Finished Doors: Maintain door aesthetics without compromising functionality.
  • Healthcare and Schools: Perfect for touchless entry installations using wave-to-open sensors.
  • Compliance Upgrades: Ideal for projects needing to meet UL fire and burglary ratings.

Why Dealers Love It:

  • No Core Drilling = Faster Installs: Save labor and avoid damaging fire-rated or wood doors.
  • Reduced Callbacks: No wires to break or degrade over time.
  • More Tolerant Alignment: Easier to install than inductive wireless devices.
  • Upsell Opportunity: Bundle with electrified locksets, exit devices, and wave-to-open switches.
  • Profitable Retrofits: Unlock more margin on existing door openings where wiring is difficult.

Technical Summary

  • Power Input (Frame Side): 600 mA @ 24 VDC
  • Power Output (Door Side):
    • 600 mA @ 12 VDC
    • 300 mA @ 24 VDC
  • Door Gap Tolerance: Up to 1/4″ (7mm)
  • Alignment Tolerance: Horizontal & vertical < 5/64” (2mm)
  • Dry Inputs:
    • (1) 4-second fixed unlock trigger
    • (1) 1–90 second adjustable unlock timer
  • Dry Outputs (Frame Side):
    • (2) SPDT, 1A @ 30 VDC resistive
    • (2) SPST-NO, 100 mA @ 60 VDC resistive
  • Environmental Rating: -4°F to 140°F
  • Weight: 1 lb
  • Certifications:
    • UL 10C Positive Pressure Fire Tests
    • UL 1034 Burglary-Resistant Locking Mechanisms

Note: For use with failsecure (power-to-unlock) locks only. Not compatible with failsafe or continuously dogged locks.

How the SDC WPT Works

Unlike inductive systems that require precise coil alignment, the WPT uses RF energy, which:

  • Transmits power as radio waves across the door gap.
  • Converts the RF signal into usable DC voltage via an internal receiver.
  • Transfers data (REX, DPS, latch status) along with power.
  • Is less sensitive to vertical and horizontal misalignment than coil-based systems.

This makes the WPT more installer-friendly and reliable in real-world deployments—especially in field conditions where perfect alignment isn’t always possible.

Accessory Highlight: WPT Drill Jig

For installers working with solid or particle-filled wood doors, SDC offers a WPT Drill Jig Assembly (part #SDC-WPT), available from JustDoorToolz. This makes prep quick, clean, and precise—ensuring a secure, code-compliant fit for every install.

Partner with SESP for Your SDC Installations
Southeast Security Products represents SDC and other best-in-class manufacturers across the Southeast U.S., offering hands-on support, product expertise, and dealer-focused programs to help you grow your business. Whether you’re building your first smart home package, upgrading to next-gen connectivity, or integrating high-performance technology into a larger security system, we can help you select the right solutions to power your installations. Contact us today for pricing, training, or to request a demo of the WPT Wireless Power Transfer Device.

Visit sesproducts.com or reach out to learn more about how we can support your next project.

The STI-1200A Fire Alarm Cover is specifically designed to enable safe, code-compliant installation of manual fire pull stations in wet, wash-down, or outdoor environments. This rugged enclosure includes a four-inch deep back box and gasketed polycarbonate housing that protects devices from water, humidity, and physical damage—ensuring reliable operation even in the harshest conditions.

Unlike traditional alarm covers that focus on preventing false activations, the STI-1200A is built to solve the unique challenges of mounting fire system components in areas exposed to moisture or direct spray. It allows installers to confidently place addressable pull stations where they’re needed most—without risking corrosion, electrical failure, or code violations.

Key Product Features

  • Engineered for wet, wash-down, and outdoor environments

  • Four-inch enclosed back box with gasket and conduit hub

  • Rain-tight seal provides protection equivalent to NEMA 3R

  • Accommodates standard-sized manual fire pull stations

  • Durable UV-stabilized polycarbonate construction

  • Operating temperature range: -40°F to 250°F (-40°C to 121°C)

  • ADA Compliant and UL Listed (UL No. S2466)

  • Comes with “In Case of Fire – Lift Cover Pull Fire Alarm” label

  • Custom labeling available

  • Three-year warranty against polycarbonate breakage in normal use

Where to Use It — Ideal Applications for STI-1200A

The STI-1200A Fire Alarm Cover is not about stopping false alarms—it’s about enabling safe, compliant installation of pull stations in environments where moisture or high-pressure cleaning is part of daily operations.

Common Use Cases:

  • Food Production & Meat Packing Plants: Frequent hose-downs and sanitation processes demand enclosures that resist moisture ingress.

  • Commercial Kitchens & Cafeterias: High humidity and occasional splashes make standard pull station setups vulnerable.

  • Shower & Locker Rooms: Install pull stations near exits without risking corrosion or malfunction.

  • Outdoor Installations: Protect devices from rain, snow, and temperature extremes.

  • Breweries, Bottling Plants, and Cold Storage Facilities: Where condensation and industrial cleaning are routine.

Why Dealers Recommend It:

  • Enables Compliance: Ensures installations meet safety codes in wet locations without resorting to expensive custom solutions.

  • Simplifies Planning: Works with most standard-sized pull stations for easy integration.

  • Reduces Liability: Keeps critical life safety systems functional and accessible even in harsh environments.

  • Builds Trust: Gives your end-users a visible, robust protection solution for their fire safety devices.

Technical Summary

Designed specifically to house fire alarm pull stations in wet or wash-down environments, the STI-1200A Fire Alarm Cover and back box includes all necessary components to ensure a sealed, weather-resistant installation:

Certifications & Compliance:

  • UL Listed (UL No. S2466)

  • ADA Compliant for manual operation

  • Meets requirements for rain-tight installations (similar to NEMA 3R)

Construction & Materials:

  • Tough, tamper-resistant polycarbonate housing

  • UV-stabilized for outdoor use

  • Comes standard with gasket and conduit hub

  • Four-inch deep back box included for recessed installations

  • Factory-printed “In Case of Fire – Lift Cover Pull Fire Alarm” label

Environmental Protection:

  • Operating range: -40°F to 250°F

  • For wet locations, STI recommends drilling two 3mm drain holes in designated areas to prevent water accumulation inside the enclosure

  • Mounting surface must be smooth to maintain rain-tight integrity

Dimensions:

  • Height: 10.32 in. (262mm)

  • Width: 9.03 in. (229mm)

  • Depth: 4.33 in. (110mm)

Compatible With:

  • Most addressable and conventional pull stations

  • Outdoor-rated manual stations when further protection is needed

Partner with SESP for Your Safety Technology International Installations

Southeast Security Products represents Safety Technology International and other best-in-class manufacturers across the Southeast U.S., offering hands-on support, product expertise, and dealer-focused programs to help you grow your business. Whether you’re building your first smart home package, upgrading to next-gen connectivity, or integrating high-performance technology into a larger security system, we can help you select the right solutions to power your installations. Contact us today for pricing, training, or to request a demo of the STI-1200A Fire Alarm Cover.

Visit sesproducts.com or reach out to learn more about how we can support your next project.

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