Weidmuller GPRS Alarm Unit - Manual (Page 77)

Hardware
5-75
5.3 Installation guidelines
The specified maximum operating temperature pertains to the air
temperature beneath the IE-GPRS-I/O (air inlet).
Observe a sufficient distance to devices emitting strong electromagnetic
radiation (such as frequency converters, transformers, motor
controllers, etc.). The clearance between these devices and the
IE-GPRS-I/O should be as large as possible. If necessary install a
shielding of partition walls (MU metal).
Do not plug or remove the devices during operation!
Before removing a IE-GPRS-I/O, also remove the relevant plugs and
connectors.
Do not connect or remove the connectors if the supply lines are still live
(all-pole disconnection).
5.4 Storage and storage temperatures
The following values will apply for storing:
Storage temperature: -10 ... +70 °C
Humidity: 30 ... 95 % (not condensing)
5.5 Operating temperature, humidity
The following values will apply for operation:
Operating temperature with
vertical mounting position:
-10 ... +55 °C
Humidity: 30 ... 95 % (not condensing)