... With strong networking, flexible to support RS485, Ethernet, WIFI, GPRS and other communication modes;Specification BG4KTLBG5KTLBG6KTLInput (DC)Max ... -270 (AS4777); 184-276(ENEL Guide line)Grid Frequency50Hz/60HzPower factor≥0.99(at nominal power) ... , DC isolation monitoring , DC monitoring,Grounding fault monitoring , Grid monitoring , Island protection , Short circuit protection , Over temperature ...