Feature: 1. Operating Principle: Two power supplies automatically switch to continuous power supply. This battery switching module ensures reliable and smoothing power transfer. 2. 30A rated output current: This automatic switch module adopts premium printed circuit board material and 30A rated output current, and it provides ample power for various applications. 3. Main Power and Backup Power: When the main power supply is powered on, the backup power supply is disconnected and the main power supply outputs. When the main power supply is powered off, the backup power supply is automatically switched on and output. 4. Automatic Cut Off: When the main power supply is supplied again, the backup power supply is automatically cut off, and the main power supply outputs. 5. MS Level Interval: When the main and backup power supplies are switched, the interval between them is only ms level. Specification: Item Type: Battery Switching Module Material: Printed Circuit Board Voltage: 220V Rated Output Current: 30A. Package List: 1 x Automatic Switch Module1 x Case1 x Case Accessory4 x Screw Spike