Features: Secure uninterrupted power supply with this 220V Automatic Transfer switching , featuring real time electric /current monitoring, adjustable defense thresholds, and seamless switching between double sources like and solar for enhanced safety. 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 . 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 safety compliance. Specifications: Component : plastic Size: about 9x9x6.6cm/3.54x3.54x3inch electric : 220v Rate current: 63A Package Includes: 1xAutomatic Transfer switching note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.