My choice is focused product from its price first. And then because I wanted my UPS warn my Synology in case of power failure.
He completed his task perfectly.
I am pleasantly surprised to see the hatch for replacing the battery in case of failure.
The only regret I would have to EMMETRE that Cpl signal is very bad happens on the monitored outlets. The models above the offering, I guess I would have to invest more.
Anyway this is a great advantage to extinguish or to safety my servers (a syno, a media server, a box and a raspberrypi) preventing me before the break. It takes at least 10 minutes, I have not tested Judgement total.