1. Dual power automatic switcher, automatically switching power to that the load equipment does not stop or restart. 2. The LED indicator light shows the power supply direction and charging status at a glance. 3. It has the advantages of overload protection, safety and energy saving, and no noise during switching. 4. The function of the automatic transfer switch is to achieve rapid conversion between the main power supply and the backup power supply. 5. Wide range of applications: It is applicable to fields such as industrial control PLC, monitoring, solar street lamps, and communication equipment. Working voltage: DC 12V Note: Do not reverse the positive and negative terminals of the battery. Reversing them burn out the internal fuse. Color: Black & Material: ABS Package Contents: 1 * Dual power automatic switcher Only the above package content, other products are not included. Note: Light reflection 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.