802.3af

Can I power a Hikvision (DS-2CD2055FWD-I) power input specified as: PoE (802.3af, class 3), 7 W with a Ubiquiti 802.3af (SKU: U-POE-AF) injector? Both standards seem right but want to ensure compatibility as I find the injector price a bit on the cheap side and need to buy several.