Hello friends I live in a third world country so electricity here is really sucks so sometimes I see the room lamp turned off then on again for just a second or less than a second and it happened before 3 times continuously i mean its just a 4 or 5 seconds between every power cut but my PC was still running without restarting or shut down.(HP compaq desktop) my question about UPS is can It operate in high temperature like 45 Celsius in summer for 10 hours without break ? and if so does it really serve in my condition ? and if I can't buy it now and using my PC without a UPS could this damage my PC ? and I wonder if my PC has been already damaged because of bad power as i mentioned above ? Sorry if i'm not good at English, Have a good day.