The User web interface login password is the same as the SNMPget community and the Admin is the same as the SNMPsetget community string. This is the default on the units. So you can enable these in the System page on your units web interface. You set the web log in passwords there at that SNMP Community Settings, where on the newer SP2?s (mega256 chip ? more memory) you can have separate login passwords from you SNMP communities. If you have a sensorProbe8 and after the update you see an i on the end of the SPXXXi this determines that you unit has the older mega128 chip. This will also show on older SP2?s and all SP8?s. All sensorProbe2 units shipped after October 2009 and sensorProbe8, sensorProbe8-X20 and sensorProbe8-X60 units shipping after July 1st 2011 have the mega256 8MB flash memory chip. To determine your units chip version please check the web interface in the system page >> System Description sensorProbe units with mega128 memory chip = SPXXXi sensorProbe units with mega256 4MB memory chip = SPXXXj sensorProbe units with mega256 8MB memory chip = SPXXX