(programable) Pri: 100 V - 500KV Sec: 100 V - 500V Alarm Indication % THDI 20 -100% / OFF Over Voltage AC (L-N) 50 - 277V (L-L) 85 - 480V Under Voltage AC (L-N) 50 - 240V (L-L) 85 - 415V No Voltage ON / OFF Over compensate ON / OFF Under compensate ON / OFF...