Feature: 1. As a universal type, this is the power-off automatic switch module for 5V-48V battery. 2. Actually, when the DC terminal is energized, it seems that it is best to supply power to the load. 3. When the DC terminal is not powered, the battery is automatically switched to supply power to the load. 4. Entitled with good quality, it is also given with stable performance, which makes itself durable. 5. Made of the material in high quality, thus, it is entitled with the good performance to work as a converter. Specification: Item Type: Power off automatic switch module Product Model: YX850 Application Area: DC 5V-48V Product Charging: 10A Product Size: Length: Approx.61mm x 30mm x 18mm / 2.4 x 1.2 x 0.7in (LxWxH)Installation Size: Approx. 23mm / 0.9in ( 2 x Ф3MM) Product Weight: Approx. 22g Product Packaging: Anti-static bag packaging Package List: 1 x Emergency Converter YX850