The 12V20Ah lead-acid batteries, is the core backup power supply for security monitoring systems, specially designed for power-off endurance scenarios. In the monitoring systems of municipal roads, residential communities and stores, it can switch power supply quickly when mains power fails, ensuring continuous operation of cameras and recorders. It provides sufficient emergency power for several hours and adapts to centralized power supply monitoring sets. It is also compatible with infrared alarm equipment, building intercom systems and security sensors. With strong anti-interference and voltage stabilization performance, it adapts to complex installation environments and greatly improves the stability of security systems.