PTP450i and PTP820C PoE injector


I am working on a project that requires the replacement of several PTP58400 links with PTP450i hardware until we are able to return and install PTP820C equipment.  In order to simplify our sparing of parts and the future upgrade I would like to install the PTP820 redundant power PoE injector on the PTP450i links. 

Is the PTP820 PoE injector(N000082L022) compatible with the PTP450i?

I'm 90% sure they will, but check the spec sheet for the PTP450i and PTP820C i think they are both 802.3af so any 802.3a f injector will work