| Item Description | Intelligent lightning protection monitor / lightning protection monitor ESM-21312-R-SMART lightning protection series, powered by 220V, default digital display (optional oled screen display), supports on-site quick query of real-time status values, alarm values, etc., and supports local settings; 3-CHANNEL sensing voltage monitoring, 3-CHANNEL leakage current monitoring (monitoring accuracy 10 µ a, monitoring range 10 µ A-2000 µ a), and 2-CHANNEL temperature monitoring; Monitoring of circuit breaker status, remote signaling status, grounding status, and number of induced electrical/lightning intrusions; Intelligent calculation of SPD degradation trends to achieve intelligent judgment of SPD damage status |