The GSM GPRS Power Facility Alarm (GSM GPRS Outdoor Alarm Controller)S250 in-built industry microprocessor inside, with waterproof and weatherproof enclosure, supports solar panel powered up. It provides 2 digital relay outputs (240VAC/10A), 8 digital inputs(Dry contact, Lightning protection, Electrostatic protection, Over current protection.), 3-Phase AC Power Opto-isolated inputs to detect the Electricity A , B, C 3 phase status. It allows you to monitor and control an alarm or remote stations or equipments or machines by SMS(Short Message Service) Or GPRS. It is very suitable for outdoor security protection and Transformer anti-theft requirements, Power Transmission Equipments Burglarproof applications as well as power cable anti-theft and so on. When any cable was cut or loss, or and detector activated, the panel will alert the owner immediately by SMS, or call, as well as to Web Based Monitoring Center. also, it will start the siren immediately. The system with intelligent designed, it can distinguish the normally power off and cut cable power off. This is very useful for power device transmission devices.