... Port SNMP adapter (optional) Advanced no-master-slave parallel technology (optional) Intelligent battery monitor system - MMBM (optional ... )DisplayLCD Display indicates frequency, voltage, load, battery voltage, etc.LED indicates running statusAlarm AC input ... -temperature, battery low voltage, output over/low voltageNoise(dB)<65Working Temperature0~40Relative Humidity0 ~ 95%, No condensationDimension ( ...