12–14.8VDC 20A 18-Channel Power Supply Box with Battery Backup Capacity

Product Overview

The PLK12DC20ABK is a heavy-duty 18-channel centralized DC power distribution box engineered with an integrated battery backup charging circuit to ensure uninterrupted power for up to 18 security cameras, DVRs, or access control systems. Delivering a total output capacity of 20 Amps (240 Watts) with an adjustable voltage range of 12 to 14.8 VDC, it compensates for long-distance voltage drops while maintaining continuous operation during AC utility power outages.

Housed in a spacious, wall-mountable steel cabinet with internal space for a standard 12 VDC sealed lead-acid (SLA) backup battery (up to 7Ah or  12Ah), each of its 18 channels is individually protected by auto-resetting PTC fuses. Front-panel and internal LED status indicators give technicians immediate diagnostic feedback on AC power, DC output, and battery status.

Key System Features & Functionality

• Integrated Battery Backup Circuit: Automatically switches to connected 12V SLA backup battery during AC power failures with zero transfer time.

• 12 to 14.8 VDC Adjustable Output: Internal trimmer potentiometer allows fine-tuning output voltage to overcome long cable distance power drops.

• 20A Total Output Capacity (240W): Supports up to 18 cameras simultaneously, supplying up to 1.1 A per channel for high-power IR illuminators and PTZ devices.

• Auto-Reset PTC Fuse Protection: Individual self-resetting PTC fuses isolate short circuits or current spikes on single channels without requiring physical fuse changes.

• Lockable Steel Enclosure with Battery Space: Wall-mount heavy-gauge steel cabinet features key lock security and dedicated internal space for SLA backup batteries.