... (Dry contact, Lightning protection, Electrostatic protection, Over current protection), 3-Phase AC Power Opto isolated inputs to detect the Electricity A ... on. When any cable was cut or loss, or and detector activated, the panel will alert the owner immediately by SMS ... : 2.50KgSkype: AsiaGSMalarm GPRS Outdoor Alarm Controller S250,Three-Phase Power Line Protection,NC/NO/EOL Dry Contact,Remote Relay ...