| OID | 1.3.6.1.4.1.705.1.4.25.1.1 | 
| Module | MG-SNMP-UPS-MIB (MGE) | 
| Nom | mgextAlarmIndex | 
| Acces | readonly | 
| Status | mandatory | 
| Description | A unique value for each external alarm. Its value ranges between 1 and the value of upsmgConfigExtAlarmNum. | 
| Syntaxe | Integer32 (1...50) |