Siemens SIMATIC RF300 System Manual page 153

You will find the current versions of the standards in the currently valid UL HAZ. LOC. certificates
UL HAZ. LOC. mark
NOTICE
Validity only when the devices are marked
There is a corresponding approval only with devices to which the UL HAZ. LOC. mark is applied.
The identification of the electrical equipment is:
-25 °C < Tamb. < +70 °C
IP64
U = 24 V DC, 60 mA
n
The equipment also has the following additional information:
XXXYYYZZZ
Using the reader in hazardous area for gases
The temperature class of the reader for hazardous areas depends on the ambient temperature
range:
Ambient temperature range
-25 °C < Ta < +70 °C
Ignitions of gas-air mixtures
When using the reader, check to make sure that the temperature class is adhered to in keeping
with the requirements of the area of application
Non-compliance with the permitted temperature ranges while using the reader can lead to
ignitions of gas-air mixtures.
SIMATIC RF300
System Manual, 02/2021, C79000-G8976-C345-09
LISTED E223122
IND.CONT.EQ FOR HAZ.LOC.
CL.I, DIV.2, GP.C,D T4
CL.II, DIV.2, GP.F,G T80 °C
AEx ec IIB T4 Gc, Ex ec IIB T4 Gc X
AEx tc IIIC T80 °C Dc, Ex tc IIIC T80 °C Dc X
[= serial number, is assigned during production]
WARNING
5.3 SIMATIC RF340R/RF350R
Temperature class
T4
Readers
153