Keep low-voltage security infrastructure online with the Altronix AL400UL power supply/charger. Designed for 12-24V DC applications, it combines regulated power delivery with battery charging in a single enclosure, reducing the need for separate components and simplifying installation at the panel. UL and CSFM listings make it a practical fit for regulated security environments where compliance matters as much as uptime. At 4A, this unit is sized for smaller to mid-range access control, alarm, and surveillance support loads that need stable DC power and backup capability. That matters when a cheaper supply can leave you with limited headroom, more service calls, or a fragmented battery setup. The AL400UL is built to support dependable operation where continuity is the requirement, not the exception. For integrators and facilities teams, the value is straightforward: fewer parts to manage, cleaner deployment, and a power path designed for always-on systems. When the application calls for a listed supply/charger that can support battery-backed operation in a security cabinet or control enclosure, this model fits the job without excess complexity.