What UPS is recommended for me?

[Perene]

Guys, this is my PC:

The case:
http://oemshop.com.br/p/gabinete-ga...-3-fans-120mm-led-azul-lateral-em-acrilico-38

Monitor = LCD 24"" W2452V (LG):
http://www.prad.de/en/monitore/review/2008/review-lg-w2452v.html

EPSON XP-204 (printer/scanner)
http://global.latin.epson.com/br/Inventario/Epson-Expression-XP-204/Drivers-e-Suporte

CPU: Core i7 4770
GA-H97M-D3H LGA 1150 Box:
http://www.gigabyte.com/products/product-page.aspx?pid=4971#ov

Corsair DDR-3 1600mhz Vengeance - CMZ8GX3M1A1600C10 (8 GB, one)

PSU Seasonic ATX 520W S12II-520
http://www.seasonicusa.com/S12II-Bronze.htm

SSD Samsung 840 Evo 120gb Sata 6gb/s

HD SATA Samsung 750 GB (753LJ)
HD SATA Seagate 300 GB
HD Western Digital 1 TB (Blue)

Video card is R7 265: http://www.guru3d.com/articles-pages/amd-radeon-r7-265-review,1.html

Cooler Hyper 212X: http://www.coolermaster.com/cooling/cpu-air-cooler/hyper-212x/

I need a suggestion of what UPS is recommended for me. One that will not harm the PSU/rest.

Brazil voltage is 110-220V and frequency, 60Hz. My city uses 220V, however the UPS I am using right now is bivolt:

http://www.sms.com.br/produtos/Nobreak-SMS/Net-4

Input is 115/127V~ or 220V~
Output is 115V

Can any of you recommend a model?

Thanks!