... Controller S250; Three-Phase Power Line Protection; NC/NO/EOL Dry Contact; Remote Relay Output. Remote Monitoring Your Outdoor ... provides 2 digital relay outputs (240VA,10A), 8 digital inputs (Dry contact, Lightning protection, Electrostatic protection, Over current protection), 3-Phase AC ... Outdoor Alarm Controller S250,Three-Phase Power Line Protection,NC/NO/EOL Dry Contact,Remote Relay Output