Securitron -u.s. AQD4-4F2 Supervised Power Supply 12-24VDC

Product Description

The SECURITRON -U.S. AQD4-4F2 is a supervised DC power supply designed for access control applications. It operates at 12 to 24 volts DC and delivers up to 4 amps of output current. The unit includes four fused outputs for distributed load protection and a 2-amp fire shutdown circuit that integrates with fire alarm systems to release electrically held or locked doors on alarm. Supervision circuitry continuously monitors the power supply and connected loads, providing fault detection for wiring and device integrity. This type of unit is typically installed by licensed low-voltage or security integrators in commercial access control panels.

The AQD4-4F2 is suited for commercial and light industrial access control installations where supervised power distribution is required. The four individually fused outputs allow technicians to segment and protect multiple locking devices or access control peripherals on a single power supply. The integrated fire shutdown function supports life-safety code compliance by ensuring controlled door hardware releases automatically during a fire alarm event. It is categorized as an access power supply and is sold as an individual unit.

Key Features

• Supervised output circuitry for continuous fault monitoring of connected loads and wiring
• Dual voltage operation at 12 volts DC or 24 volts DC to match system requirements
• 4-amp total output capacity distributed across four individually fused outputs
• Integrated 2-amp fire shutdown circuit for life-safety and code-compliant door hardware release
• Single-unit packaging suitable for panel or enclosure mounting in access control installations

Compatibility

Designed as an OEM-style replacement or direct installation unit for commercial access control power supply applications requiring supervised 12 to 24 volts DC distribution with fire shutdown capability.

Installation Notes

Installation should be performed by a licensed low-voltage technician or security systems integrator familiar with access control power distribution and fire alarm interface wiring. Disconnect and de-energize all circuits before servicing or connecting loads. Fire shutdown wiring must be connected in accordance with the local authority having jurisdiction and applicable life-safety codes. Verify output voltage selection matches the connected locking hardware before energizing the unit.