... applications;3.Power Plant, transmission Substation, power towers;4.Distribution Grid, transmission grid, power substation;5.The switch tower and ... 220VAC,2AStandby current: 5mAWorking temperature: Negative 35 to Positive 80 degreeStorage temperature: Negative 35 to Positive 80 degree Digital input: ... AsiaGSMalarm GSM GPRS Distribution Grid,Transmission Grid,Power Substation Security Alarm System S250