Altronix T2VK78D Power Supply/Charger
Overview
The Altronix T2VK78D is an eight-output regulated power supply and battery charger designed for security system integration, access control, and low-voltage DC distribution applications. This unit delivers 10A total output capacity across individually supervised outputs, making it suitable for mid-scale security deployments requiring reliable 24VDC power distribution with integrated battery backup functionality.
Key Features
- Eight Independently Supervised Outputs: Each output monitored for load status and short-circuit protection
- 10A Total Output Capacity: Sufficient power budgeting for multiple access control devices, lock strikes, and auxiliary loads
- 24VDC Regulated Output: Stable voltage delivery across all output channels
- Integrated Battery Charger: Built-in charging circuitry for backup power conditioning and float charging
- UL-Listed Construction: Compliant with safety and performance standards for commercial security installations
- Class 2 Rated: Meets low-voltage safety classification for residential and commercial deployment
- Compact Form Factor: Designed for integration in standard 24VDC power distribution architectures
- Output Supervision: Real-time monitoring of each output circuit for installation verification and troubleshooting
- PTC Thermal Protection: Positive Temperature Coefficient protection on output circuits for overcurrent and thermal management
- 115VAC Input: Standard North American wall voltage supply compatibility
Integration and Deployment
The T2VK78D integrates seamlessly into distributed access control architectures where multiple door locks, electromagnetic strikes, request-to-exit sensors, and auxiliary control devices require supervised 24VDC power. The eight independent output circuits allow mixed-load configurations—assigning specific loads to specific channels—while the output supervision capability provides immediate notification of circuit faults or overload conditions during installation commissioning and ongoing operation.
Battery backup integration is supported through the unit's charger topology, allowing connection of sealed lead-acid or compatible battery strings to maintain power to critical access control circuits during AC mains failure. This configuration is common in fail-secure and fail-safe door control deployments where power continuity is required for security protocol compliance.
The compact design of the T2VK78D allows integration into wall-mounted or cabinet-mounted power distribution panels commonly found in security system installations, reducing installation footprint while maintaining output isolation and short-circuit protection across all channels.
Technical Specifications
Electrical: 115VAC input, 24VDC output, 10A total output capacity, eight independently supervised circuits with PTC protection and real-time load monitoring.
Safety and Compliance: UL-listed, Class 2 rated for low-voltage distribution in commercial and residential security applications.
Battery Charger: Integrated float-charge management for sealed lead-acid battery backup configuration and conditioning.
Ted PerryPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
I've specified the Altronix T2VK78D in a number of mid-scale access control rollouts, and it consistently delivers on the core requirement: supervised, isolated 24VDC distribution with built-in battery charging. The eight separate outputs with individual PTC protection make it straightforward to troubleshoot circuit assignments during final commissioning, and the output supervision gives you real-time feedback on load status—critical when you're bringing up a system and need to verify every circuit is functioning before handing it off to operations.
Technical Highlights:
- Eight Independently Supervised Outputs: Each circuit is monitored, so you know immediately if a load is missing or a short is present before it becomes an operational issue.
- 10A Capacity with PTC Protection: Sized for typical four-to-eight-door access control systems with lock strikes, request-to-exit sensors, and auxiliary signaling. PTC thermal fuses provide non-destructive overcurrent handling without nuisance shutdown.
- Integrated Battery Charger: Float-charge management built in, eliminating the need for a separate charger in backup power architectures. This simplifies system design and reduces panel real estate.
Deployment Considerations:
- Plan your output assignments carefully: assign higher-draw loads (like electromagnetic strikes) to separate channels to prevent cross-load interference and ensure clean isolation for troubleshooting.
- Verify battery type compatibility before connecting backup power—sealed lead-acid batteries are the standard, and the float-charge circuit is calibrated accordingly. Document your backup battery capacity and expected hold-up time in your system commissioning notes.
- Use the output supervision feature during walkthrough and final verification. If an output shows a fault condition on the security panel, you'll know the circuit is either open or shorted before the system goes live.
For integrators managing multi-site deployments or building out distributed access control infrastructure, the T2VK78D's combination of supervised outputs, compact footprint, and battery charge management makes it a solid workhorse. It's not feature-rich—it does power distribution well—and that focus means reliable, repeatable performance across different project types.
