Altronix MAXIMAL1RD Access Control Power Controller
Overview
The Altronix MAXIMAL1RD is a dual-voltage access control power supply and charger designed for distributed access control systems requiring multiple relay outputs and integrated battery backup. Operating from 115VAC single-phase input, the MAXIMAL1RD delivers selectable 12VDC or 24VDC output at 4A per channel, with simultaneous charging capability. The 2U rackmount form factor integrates 16 individual PTC relay outputs, making it suitable for multi-door access control installations, gate operators, and integrated security systems where centralized power distribution and supervision are required.
Key Features
- 16 PTC Relay Outputs: Individual programmable relay outputs for independent door strikes, magnetic locks, and auxiliary device control
- Dual-Voltage Output: Selectable 12VDC or 24VDC operation at 4A maximum current per output channel
- 115VAC Input: Single-phase AC power input with integrated UPS functionality via rechargeable battery backup
- Integrated Battery Charger: Built-in smart charging circuit maintains connected backup batteries without external charging modules
- PTC Relay Protection: Positive Temperature Coefficient relay outputs provide inherent overcurrent and short-circuit protection without manual fuse management
- 2U Rackmount Chassis: Standard 19-inch rack-compatible enclosure for data center, server room, and security operations center deployment
- Simultaneous Power Delivery and Charging: Delivers full output power to access control devices while actively charging battery backup
- Modular Relay Architecture: Each output operates independently, allowing granular control and isolation of access points
Integration & Compatibility
The MAXIMAL1RD supports standard access control protocols and integrates into existing security systems through its 16 relay outputs. Compatible with any access control panel or reader interface that accepts dry relay contact closures. The dual-voltage capability accommodates both 12VDC and 24VDC field devices, reducing the need for multiple power supplies in heterogeneous installations. Battery backup integration enables graceful system operation during AC mains failure, critical for fail-safe and fail-secure door operators and card readers requiring continuous supervisory power.
Specifications
The MAXIMAL1RD accepts 115VAC input and delivers selectable 12VDC or 24VDC output at 4A maximum. Sixteen individual PTC relay outputs provide independent switching control. The unit measures 2U in vertical form factor and mounts into standard 19-inch equipment racks. Battery backup capability supports connected UPS applications when paired with rechargeable lead-acid or sealed cell batteries.
Ted PerryPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
I've specified the MAXIMAL1RD in multi-door access control rollouts where centralizing power distribution reduces installation complexity and improves circuit supervision. The combination of 16 relay outputs with integrated charging capability makes this unit particularly effective for medium-scale deployments spanning 8–16 doors or access points, whether for office buildings, healthcare facilities, or manufacturing environments.
Technical Highlights:
- PTC Relay Architecture: The 16 individual PTC relay outputs eliminate the need for external fusing while maintaining inherent short-circuit protection. Each output can independently control door strikes or auxiliary equipment without cross-circuit interference.
- Dual-Voltage Flexibility: Selectable 12VDC or 24VDC output allows you to standardize on a single power supply even when field devices operate at different voltage ratings, simplifying spare parts inventory and reducing overall hardware count.
- Integrated Charger: Built-in battery charging removes the requirement for a separate UPS charger module, streamlining rack design and reducing footprint in security operations centers.
Deployment Considerations:
- Verify that your access control panel or readers accept dry relay contact closure inputs; the MAXIMAL1RD does not supply data signaling on relay outputs, only switching control.
- Size backup battery capacity based on the total load current (sum of all simultaneous relay activations plus reader/panel current draw) and desired hold-up time during power loss.
- Position the unit in a climate-controlled rack environment; 4A per output assumes proper ventilation and thermal management in the enclosure.
The MAXIMAL1RD remains a cost-effective, reliable choice for access control power distribution when you need multiple independent outputs, integrated charging, and proven rackmount reliability in a compact footprint.
