ThermoWorks RTR-500GSM WIRELESS LAN OR GSM (CELLULAR) LOGGERS - Manual (Page 12)

Setting the RTR-500GSM to Run
Once you have completed making all the settings, unplug the USB cable from the RTR-500GSM. When you are ready to deploy the
unit, and any loggers that are registered, simply place the Run / Stby switch to the Run position. When the switch is in Run and all is
well, the green Power LED will blink; slowly when in idle and a network connection is established, and more rapidly when an active
communication process is taking place.
- If the orange ERR LED is blinking by itself, this is usually an
indication that communication with the Cell network cannot be
established. It is normal for this to happen for a while when the Run /
Stby switch is first placed into the Run position, as it takes a few
moments for the unit to sign on to the network. If the condition
persists it is likely the unit is not in a GSM service area.
- If you see the orange ERR and green Power LEDs blinking together
this is an indication that either there is no data logger registered to the
unit or no active process has been set within the utility (all monitoring
and downloading functions are set to OFF).
- The red ALM LED will blink when the limit conditions for any
registered logger have been exceeded. It will continue to blink while
the condition persists and will extinguish once the readings are back
within limits and a “recovery” message has been sent.
Important Note: The 500W will show an error condition (ERR LED
blinking) unless at least one Logger is registered and it is set to
perform at least one action (Send Current Readings, Send Recorded
Data or Send Warning Reports.)