Designed for hospitals, data centers, and solar powering facilities requiring stable backup power to protects refrigeration units, servers, and sensitive electronics during outages Automatically activates generators during failures, maintaining continuous operate for critical infrastructure in commercial buildings, industrial site, and off energy systems accuracy tested under or over electric defense and tool easy installation make this 63A double power switching a compact, stable solution for indoor / outdoor electrical compliance Secure uninterrupted power supply with this 220V Automatic Transfer switching, featuring real time electric / current, adjustable defense thresholds, and seamless switching between double sources like and solar for enhanced The built in LED display tracks / L2 electric and output current, while customizable delay settings ( 1s 600s) and DIN rails mounted flame retardant ABS housing secure precise control and strong operate, Manufacturer: JDNH