The short time I have been using it, it has not shown any problems. Let us not forget to clean the dust from the ventilation screen.

within a month it started giving errors and did not work in an office environment. equivalent APC ups have been working for years without problems. since it is under warranty I will send it to service and will update on the progress.

edit: it came back from service where the warranty covered it and now it has been working well for 1 month. if anything changes I will update

new edit: eventually it broke down again with an irreparable fault after 9 months since it came back from service. of course, there was humidity in the area so I can't deny that maybe the environment was quite responsible for this.

I give 3/5 stars mostly because I was disappointed that I paid so much money and it didn't last that long. of course, it's also my fault

Good reliable and keeps the loads during a reasonable time period, it has overload protection (it was activated at some point and I reset it) which you can restore using the front control buttons, the eco mode has a very small energy difference from the online mode and it is not worth losing the protection for a few watts of savings that the eco mode offers since it operates as a line interactive mode. The screen is not visually visible from all angles and the indicators are not visible under a wide viewing angle unless you look at it straight, it is energy efficient and has a power factor of 0.9 and the desired output voltage and frequency can be adjusted, but in order to change any parameter, the power supply to the loads must be interrupted and restored immediately afterwards, it has all the known protections, but it does not provide protection for weak lines (telephone, network, etc.) and it has a port for an extra module and extra functions.

This specific one lasted a little over a year, newly purchased and it blew up, smelled and caused a short circuit... I took it to a technician but we didn't figure it out.

UPS that is worth its money, one of the best value for money solutions I found on the internet. Because I needed some information regarding the equipment I wanted to support with the UPS, I called them by phone, their presales team was excellent, well-trained and willing to assist me. To the friend below who probably hasn't done much research on UPS in general, I want to point out that the fans are not disabled in any UPS and how On Line UPSs in general make noise, while Tescom is one of the quietest.

Nice UPS at a very good price. Works great for a year now, so I will get another one for home

I bought two such UPSs from Kafkas, which are unacceptable. The fan works and makes a terrible noise without the ability to lower or turn off. I definitely do not recommend it, the noise is too much and I bought two! Stay away from this brand!