My model is 1KVA (600Watts) with Dual Batteries and it has a LCD Panel in front which shows the battery, load status etc. I'm running a 350W PSU with 17'" Monitor and both of things are only taking 25% load on the UPS and rest of 75% is free. Yes it also creates a Tick sound when it turn on or off the AVR mode and also shows a sign on the UPS LCD. UPS + AVR (Automatic Voltage Regulation) is printed on the box. When ever theres a load shedding i usually turn off my system after 2 or 3 mins and my UPS is always fully charged.
Here's the link of the model:
Media Inc. Computers