ThermoWorks RTR-500NW/AW WIRELESS LAN OR GSM (CELLULAR) LOGGERS - Manual (Page 9)

If you select FTP you should be aware that if you choose
for the File Name each upload will overwrite the
previous one, so that there will be only one file created on the
server. If you want to create a sequential series of files you
will need to select a File Name that includes . If you
are uploading to a WebStorage account be sure to leave the
Recipient Folder entry blank.
Starting with Firmware Ver. 1.40 there is a third choice called
Do Not Send. (This will most likely be changed in a
subsequent version to a name that better describes its meaning.)
This is the setting that should be selected if you plan to run
TandD’s Current Readings Monitor software on a PC but not
send readings to a remote location.
10. Warning Report Settings
To enable warning reports to be sent when loggers go into an
alarm condition set Warning Monitoring to On. Warnings can
be sent to up to four recipients. If a recipient wishes to receive
warnings on a cell phone it can be done using the carrier’s
Email to SMS Gateway. For example, to an AT&T cell phone
you would enter @txt.att.net as the recipient.
Note that warnings will only be sent for loggers that have had
Warning Monitoring set to On during remote unit registration.
One note about Warning Monitoring: When you set Warning
Monitoring to On for a logger you will be asked to enter a
Warning Judgment Time. This is not the
Warning Sampling
Interval, which is fixed at 5 minutes for the RTR-500W. This
time is the duration that the set limit must be exceeded before a
warning notification will be sent.