HES XDT-12 Exit Delay Timer 12VDC
Overview
The HES XDT-12 is a compact, field-proven exit delay timer purpose-built for professional security integrators and access control installers. This 12VDC device delivers programmable delay timing functionality for electric strike installations, door release systems, and access control workflows where timed exit intervals are critical to system operation. The XDT-12 integrates directly into wired access control architectures without requiring specialized controllers or logic boards—it connects to standard relay outputs from your access control panel or credential reader.
Key Features
- 12VDC Power Operation: Standard voltage for wired access control systems means no exotic power supplies or voltage converters. Matches the power architecture already deployed in most commercial security installations, reducing field compatibility headaches.
- Compatible with HES Electric Strikes and Door Releases: The XDT-12 is engineered to work with HES access control hardware, so you know the timing logic and relay sequencing will behave predictably without custom integration work.
- Works with Standard Access Control Relay Outputs: Connects to conventional dry-contact relay logic from panels like DSC, Honeywell, and Bosch—no proprietary protocol or middleware required. This means you can retrofit the XDT-12 into existing installations without replacing control panels.
- Programmable Delay Timing: Configurable exit intervals allow you to enforce facility-specific security policies and emergency egress protocols. A 5-second delay at one secured door and a 10-second delay at another is straightforward to set without reprogramming the main panel.
- Compact Form Factor: Small size minimizes installation complexity—fits neatly inside electrical boxes, cabinet rails, or mounted directly in strike housings. Reduces visual clutter in access-controlled entry points.
- Ideal for Commercial Offices, Secure Facilities, and Access-Controlled Entry Points: Deploys reliably in indoor commercial environments where delayed exit enhances system control and supports compliance with local fire codes and egress requirements.
Integration & Compatibility
The XDT-12 integrates seamlessly into standard 12VDC security architectures, connecting directly to wired access control systems, alarm panels, and credential readers. The device supports configurable delay intervals, allowing integrators to match exit timing requirements to specific facility security policies and emergency egress protocols. Installation involves simple relay wiring—no software licensing, no network configuration, no VMS integration overhead.
Deploy the HES XDT-12 in access-controlled entry points, secure office facilities, and commercial security installations where delayed exit functionality enhances system control and compliance. The device is suited for any application requiring timed release of electric strikes or door access mechanisms in conjunction with standard access control relay logic.
Frequently Asked Questions
Q: What delay ranges does the XDT-12 support?
A: The XDT-12 supports programmable delay intervals; consult the technical documentation or your integrator for the exact minimum and maximum range available on your unit.
Q: Can the XDT-12 be retrofitted into an existing electric strike installation?
A: Yes. The XDT-12 is designed for retrofit into existing installations. If your current system uses 12VDC relay logic, the timer can be wired in series with your existing strike circuit with minimal panel reconfiguration.
Q: Is the XDT-12 suitable for emergency egress compliance?
A: The XDT-12 supports timed release of electric strikes, which is commonly used in access control to enforce delayed egress policies. Verify compliance with your local fire code and AHJ before deployment.
Q: What power supply do I need for the XDT-12?
A: The XDT-12 operates on 12VDC. Your existing access control power supply (if it delivers 12VDC at sufficient current capacity) can power the timer. Verify amperage capacity with the manufacturer if powering multiple devices on a single supply.
Q: Can the XDT-12 work with non-HES electric strikes?
A: The XDT-12 is compatible with standard 12VDC electric strikes and door release mechanisms. Verify relay contact ratings and voltage compatibility with your specific strike hardware before installation.
Q: What happens if the XDT-12 loses power during a delay cycle?
A: If power is interrupted, the timer will reset. Consult the technical documentation for fail-safe behavior specifications specific to your installation scenario.
Ted PerryPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
The XDT-12 (often searched as XDT 12) is a field-proven choice for integrators who need reliable, configurable exit delays without introducing software complexity or network dependencies into a strike circuit. The 12VDC specification is intentional—it locks the device into the existing power architecture of standard wired access control, which means no voltage step-down converters, no isolated power supplies, and no compatibility surprises when you're commissioning a system in the field.
Technical Highlights:
- Standard 12VDC Operation: Eliminates power supply mismatches. Your existing 12VDC access control transformer can power the XDT-12 alongside your credential readers, strike solenoids, and auxiliary relays—one unified architecture, no exotic voltages.
- Programmable Delay Intervals: You can set different delays for different doors without touching the access control panel logic. A secure entrance might need a 3-second delay; a high-traffic exit might need 8 seconds. Configure it on the device, not in software.
- Relay Output Integration: Works with dry-contact relay outputs from any standard panel. No proprietary protocols, no middleware—just hardwired logic. This is critical for retrofit jobs where you cannot replace the existing controller.
Deployment Considerations:
- Verify your existing 12VDC power supply has sufficient amperage capacity if you're powering the XDT-12 alongside other loads. A typical access control transformer rated for 2–4 amps can usually handle the timer, but multi-door installations may require a dedicated supply.
- The XDT-12 resets if power is lost—understand your fail-safe requirements. If you need the strike to lock immediately on power loss, ensure your strike solenoid is wired fail-safe, not fail-open.
- Test the delay behavior under load before deployment. Some strike solenoids draw significant inrush current; confirm your relay contacts and timer circuitry handle the electrical stress without chatter or timing errors.
The XDT-12 shines in retrofit scenarios and facilities where you need localized, independent exit delays at multiple secured doors without reprogramming a centralized access control panel. It is well-suited for small-to-mid-size commercial offices, data centers with secured server rooms, and controlled-access warehouses where delayed egress supports both security policy and fire code compliance.
