... of overvoltage,undervoltage,overload,short-circuit,day/night .EtcStandard communication interfaceRS232( RS485,RJ45,GPRS optional)Cooling MethodNatural coolingTemperature compensation(optional)4mV/°C ... 80Weight(KG)1.5We can adjust configurations and parameters according to individual requirement. 4 modes available: streetlight time and light control ...