... (Lockable-off);4.Communication(1) With strong networking, flexible to support RS485, Ethernet, WIFI, GPRS and other communication modes;Specification BG4KTLBG5KTLBG6KTLInput (DC)Max ... , LCD displaying , support backlit display and night displaySystem languageEnglish , German , Italian , French and ChineseStandard communication modeRS485 , EXTOptional communication modeWiFi , Ethernet , GPRS(External ...