... design 6,Fault diagnose, perfect protection function 7,Easy operation and good service 8,RS485 /GPRS communication Interface 9,Computer ... DissipationForced air coolingHumidity0 to 95%, non-condensingMax. altitude≤2000mDisplay and communicationDisplayLCDStandard CommunicationRS485Optional CommunicationGPRSMechanical parametersWidth x Depth x Height470x365x257mmWeight45.5kgCertificationTUV / ...