| OID | 1.3.6.1.4.1.318.1.1.13.1.2.4 |
| Module | PowerNet-MIB (APC) |
| Nom | airFMStatusSystemAverageRetHum |
| Acces | readonly |
| Status | mandatory |
| Description | The system average return air humidity in tenths of percent RH. This OID has been deprecated in favor of airFMSysAvgReturnHum. |
| Syntaxe | Integer32 |