N000065L001, AC Power Injector 56V, environmental specifications needed

Will the community kindly help provide information on the N000065L001 AC Power Injector 56V, which was specified in LinkPlanner with the PTP820S? Any information and recommendations would be helpful, but I particularly need the environmental specifications. I was considering using the AC Power injector in the field, but then I saw this link from Tessco , indicating it only operated up to 104 deg. F.

[edit: corrected typo in subject]

Just following up. This would still be helpful.