Tripp Lite PDUMH20AT Switched, Metered 1U 120V 20A 12 Feet PDU with Dual-Input Auto Transfer Switching

We run an enterprise network for 250 End Users with multiple applications and systems. These devices are a nice tool for the price to help monitor the network and give some insurance in case a power source fails. I have had 4 of these online for years. No issues. The display indicates the amperage on the bus, which allows me to better balance my loads. I know exactly what is on each of my UPS systems. The fail over is fast enough from Pri to Sec to not lose a load. The Net card also allows for environmental monitoring, Input monitoring and control, as well as Load Control for cycling a load when needed. You can also shed your load so critical systems stay on the UPS longer.

I've done extensive tests on this switch in order to compare and recommend the best solution for our single cord devices in data centers. The switching time of this product is unbelievable! Even with totally out of phase inputs. The only thing that I do like that this switch had is preferred source selection button in front panel which gives more flexibility.