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Enhance Visibility and Compliance with STI Select-Alert Mini Alarm and Strobe Controllers

Jul 3, 2025 | Intrusion

STI Select-Alert Mini Controllers with Audible Alarm and LED Strobe at Gas Pump Station

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.

Security dealers know that when it comes to alerts—visual clarity and audible deterrence are key. Whether you’re reinforcing access control protocols, warning of unauthorized exit attempts, or drawing attention to environmental alerts, the STI Select-Alert series offers a compact, flexible, and effective solution. Designed for both indoor and outdoor use, the STI Select-Alert Mini Alarm and Strobe Controllers provide visual and audible signaling to deter, alert, or communicate clearly—without adding complexity to your install.

For dealers and integrators, it’s a go-to product for enhancing life safety, loss prevention, and code compliance across a range of verticals.

Key Product Features

  • Compact, durable polycarbonate housing with IP66 rating

  • 32 selectable alarm tones with adjustable volume (up to 105 dB at 1 meter)

  • 8 programmable strobe flash patterns in multiple color options

  • Built-in timer (15 seconds to 30 minutes) or continuous alert

  • DIP switches for configuring volume, tone, flash pattern, and timing

  • Tamperproof hardware included

  • Built-in relay output (Form C) for external triggering

  • UL/cUL Listed and ADA compliant (when mounted properly)

  • Low current draw for use with 12–24 VDC systems

Use Cases & Dealer Benefits

The STI Select-Alert line delivers plug-and-play versatility that supports a wide variety of dealer applications:

Access Control Compliance
These units are ideal for emergency exit doors or delayed egress applications. Their bright strobes and loud tones help meet IBC/IFC requirements and draw attention to unauthorized use—while reducing false alarms and ensuring system accountability.

Environmental Monitoring
Pair the Select-Alert with sensors for temperature, moisture, or chemical levels. When thresholds are crossed, it provides clear audible and visual feedback—especially valuable in labs, data centers, and industrial settings.

Retail & Loss Prevention
Deploy at storage rooms, fire exits, or employee-only areas to immediately notify staff of door-open events or security breaches. The Select-Alert acts as a first-level deterrent that helps prevent incidents before they escalate.

Intrusion Alerting
Mount in restricted zones or after-hours areas to reinforce boundaries and enhance site security. The alarm can be set to sound and flash for a defined time, or continuously until reset.

Dealer Advantages

  • Simplifies compliance with built-in signaling

  • Fast setup using internal dip switches

  • Eliminates the need for separate logic controllers or relay boards

  • Works across multiple vertical markets

  • Improves ROI through versatility and reliability

Why It’s More Than Just an Indicator—It’s a Mini Controller

While many strobes and sirens require external logic to trigger alerts, the STI Select-Alert is a self-contained controller that offers intelligent behavior right out of the box:

  • Built-in Activation Logic: It monitors external trigger inputs (like door contacts or tamper switches) and automatically activates based on conditions you set.

  • Customizable Behavior: DIP switches allow techs to adjust tone, volume, strobe pattern, and timing—no need for an external timer or relay board.

  • Form C Relay Output: When triggered, the internal logic can activate another device like a panel or secondary alert—turning this unit into a decision-making component, not just a passive alert.

  • Power Smart: It manages current draw and operates on 12–24 VDC or battery power while routing energy intelligently to the sounder, strobe, and relay.

This makes it more than just a notification device. The STI Select-Alert controls its own behavior and output—and in many applications, can take the place of a dedicated controller.

Technical Summary

  • Models Available:

    • STI-SA5600: Alarm only

    • STI-SA5601: Alarm + strobe

    • STI-SA5602: Strobe only

  • Operating Voltage: 12–24 VDC

  • Sound Output: Up to 105 dB @ 1 meter

  • Current Draw:

    • SA5600: 60–120 mA

    • SA5601: 120–240 mA

    • SA5602: 90–180 mA

  • Timer Options: 15s, 30s, 60s, 30 minutes, or continuous

  • Strobe Options: Red, amber, green, blue, or white with 8 flash patterns

  • Relay Output: Form C, 1A @ 30 VDC

  • Certifications: UL/cUL Listed, ADA Compliant (height-dependent), IP66-rated

  • Operating Environment: -40°F to 120°F

  • Enclosure: UV-stabilized polycarbonate, tamper-resistant

Partner with SESP for Your STI Installations

Southeast Security Products represents Safety Technology International (STI) 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 Select-Alert Mini Alarm and Strobe Controllers.

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

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