|Have you had a look on the "label/sticker" on your UPS? If it's (still) affixed, then it ought to show the voltages specifications. Equally the manual for your UPS ought to give mains/line voltage in specs,; as ought the website(tech support/specs) for your UPS?|
Most "current/modern" kit auto-senses the incoming line/mains voltage; and ensures what's created within the system's psu is OK - having sensed (one hopes) correctly the incoming voltage.
Older kit of course often had the incoming voltage selector on the back; either jumper or a switch. I still have a trés elderly Dell Dimension ('98 vintage) and an even older vanilla 386sx system; both have manual/jumper (plug) selection for the incoming line/mains voltage setting.
Bearing in mind Canada/USA are on 120volts - nominal; can vary a little (sometimes slightly less...); and the Philippines are on 220volts... and both use different plugs/sockets to each other..., you will need either an adapter for your USA plugs to fit into the Philippines sockets; or you change the plug on your UPS. Likely too you may have "other IT kit too? Presuming so I'd take a few spare adapters; or be prepared to change those plugs too?
These links may also be of use...?