Henry Engineering BackUPS Failsafe UPS Power Switcher

The BackUPS Failsafe UPS Power Switcher from Henry Engineering is a power controller for ensuring reliable AC power to critical equipment that is powered with an Uninterruptible Power Supply (UPS). BackUPS constantly monitors the output of the UPS, and automatically bypasses the UPS if its output fails or becomes unstable. This controller supports two AC inputs: Line and UPS. Line is plugged directly into a local AC socket; UPS is connected to the output of the UPS. If BackUPS senses that there is any interruption in the UPS output, it switches to Line, bypassing the UPS entirely. This keeps the load powered up and allows the UPS to be disconnected for battery replacement or other maintenance.