Device 3 urn:oma:lwm2m:oma:3 Single Mandatory Manufacturer R Single Optional String Model Number R Single Optional String Serial Number R Single Optional String Firmware Version R Single Optional String Reboot E Single Mandatory Factory Reset E Single Optional Available Power Sources R Multiple Optional Integer 0-7 Power Source Voltage R Multiple Optional Integer mV Power Source Current R Multiple Optional Integer mA Battery Level R Single Optional Integer 0-100 % Memory Free R Single Optional Integer KB Error Code R Multiple Mandatory Integer 0-8 Reset Error Code E Single Optional Current Time RW Single Optional Time UTC Offset RW Single Optional String Timezone RW Single Optional String Supported Binding and Modes R Single Mandatory String Device Type R Single Optional String Hardware Version R Single Optional String Software Version R Single Optional String Battery Status R Single Optional Integer 0-6 Memory Total R Single Optional Integer ExtDevInfo R Multiple Optional Objlnk