Dual AC power automatic switching module. The module can automatically switch between the two power sources. Simple to use and widely used. Made of high-quality materials, it is firm and stable to use. and lightweight, it does not take up space and is easy to carry. and long service life. Product Name: AC Automatic Power Switch Input Voltage: Main Power Supply 85V-240V Input Voltage: Emergency Power Supply AC 85V-240V Load Current: Max 10A Color: Blue Material: PCB Size: 70mm x 47mm x 18mm Package Contents: 3 x Power Switch Module Only the above package content, other products are not included. Included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.