The DC-UPS powers your tools in the automobile using the vehicle electrical system, but switches to exterior battery power in the event the car's battery is eliminated, stolen, or drops under a predetermined voltage, acting as a battery backup (BBU) and power conditioner. This Internet site is using a safety https://collinb5sx3.bloginwi.com/67778492/little-known-facts-about-cctv-power-supply-backup