Check the listing for details. Altronix SMP3PMP4CB Supervised Power Supply/Charger. Condition: New. Listed at 124.99 USD. The Altronix SMP3PMP4CB is a robust, multi-output supervised power supply and charger designed for security, access control, and CCTV applications. It accepts 115 VAC or 230 VAC input (50/60 Hz) and delivers four independently fused and electronically regulated 12 VDC or 24 VDC outputs, each capable of up to 2.5 A. Built-in PTC (auto-resettable) protection guards against overloads and short circuits. The unit includes a battery charger circuit for sealed lead‑acid or gel batteries (batteries not included), providing seamless switchover during power failures with zero voltage drop. It features supervised Form‑C contacts for AC‑fail and low‑battery detection, plus LED indicators for AC input and DC output status. Housed in a grey BC300 wall‑mount enclosure that accommodates two 7 AH.