... the ground (standard power cupboard) Backup time: 90-120 minuted, (standard), the backup time coule ... 20,25,30,45,55,75,95,110,130,160,180,200,220,250,280,315,400, ... battery maintained for freeBackup timeStandard time is 90 minuted or 120 minuted (backup time could ... %Operation environmentTemperature:-24oC-40oC, Relative humidity: 0-90% sealever height:less than 2000mNoiseWhen there is city ...