Emergency Power Switch DC 12V 12A 150W AC Adapter and Battery Automatic Switch Module Product overview This emergency power supply controller automatically switches between an AC adapter and a backup battery to keep 12V equipment powered during adapter failure or power interruption. It supports up to 12A and 150W, providing a compact and practical solution for uninterrupted DC power. Key benefits Automatic switching: Detects adapter loss and transfers power to the battery without manual intervention, reducing downtime for critical equipment. capacity: Rated for DC 12V, 12A, 150W to support a wide range of 12V devices. Reliable operation: Designed to manage the power source transition so connected devices remain functional when the main supply fails. Simple integration: Works with standard 12V adapters and compatible batteries for straightforward installation and use. Space efficient: Compact module form factor that fits into control cabinets, equipment racks, or enclosures where 12V backup is needed. Main functions and performance Power source detection and automatic transfer between AC adapter and battery. Supports continuous load up to 12A and peak use within the 150W limit. Intended for DC 12V systems and devices that require uninterrupted DC power. Compatibility Compatible with most 12V DC appliances and systems that draw 12A or less and do not exceed 150W total power. Works with common 12V AC adapter and battery combinations for backup power setups. Practical applications Security and surveillance: Keep CCTV cameras and DVR/NVR systems running when the primary adapter fails to preserve recording and monitoring. Network continuity: Maintain routers, switches, and modems during power interruptions to support ongoing network and communication needs. Access control and point of : Provide emergency power for door controllers, card readers, and POS terminals to avoid operational interruptions. Installation and usage notes Designed for use in 12V DC systems. Verify connected devices stay within the 12A and 150W ratings. Install the module in a location that allows access to both the AC adapter output and the backup battery terminals for correct wiring. Use appropriate wiring and fusing consistent with the equipment and electrical codes for safe and reliable operation. What makes this product stand out Focused functionality for automatic source switching in 12V systems. Clear specifications that match common 12V backup needs: DC 12V, 12A, 150W. A practical, compact controller that simplifies adding battery backup without complex power management hardware. Technical specification summary Operating voltage: DC 12V Maximum current: 12A Maximum power: 150W Function: AC adapter and battery automatic switch module for emergency power This module is suitable for anyone needing a straightforward, reliable automatic switch between an AC adapter and a backup battery in 12V systems.