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 and stable to use. Small and lightweight, it does not take up space and can be taken . Durable and long service life. Product Name: AC Power Automatic Switch Voltage Input: Main Power 85V-240V Voltage Input: Backup Power AC 85V-240V Load Current: Max 10A color:Blue Material:PCB size:70mm x 47mm x 18mm Package Contents: 1 Switch Module Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.