Siemens SIMATIC RF600 Series System Manual page 385

Temperature class assignment for gases and a radiated power less than 100 mW ERP
If the radiated power of an antenna radiating into the hazardous area or located in the
hazardous area and operating in the 865 - 868 MHz frequency band cannot exceed the
value 100 mW, the temperature class assignment is as follows:
Ambient temperature range
-25 °C ... +200 °C
-25 °C ... +190 °C
-25 °C ... +125 °C
-25 °C ... +90 °C
-25 °C ... +75 °C
Temperature class assignment for gases and a radiated power less than 500 mW ERP
If the radiated power of an antenna radiating into the hazardous area or located in the
hazardous area and operating in the 865 - 868 MHz frequency band cannot exceed the
value 500 mW, the temperature class assignment is as follows:
Ambient temperature range
-25 °C ... +220 °C
-25 °C ... +173 °C
-25 °C ... +108 °C
-25 °C ... +73 °C
-25 °C ... +58 °C
Temperature class assignment for gases and radiated power for 1000 mW ERP
If the radiated power of an antenna radiating into the hazardous area or located in the
hazardous area and operating in the 865 - 868 MHz frequency band cannot exceed the
value 1000 mW, the temperature class assignment is as follows:
Ambient temperature range
-25 °C ... +220 °C
-25 °C ... +151 °C
-25 °C ... +86 °C
-25 °C ... +51 °C
-25 °C ... +36 °C
SIMATIC RF600
System Manual, 10/2016, J31069-D0171-U001-A19-7618
7.14 SIMATIC RF680T
Temperature class
T2
T3
T4
T5
T6
Temperature class
T2
T3
T4
T5
T6
Temperature class
T2
T3
T4
T5
T6
Transponder
385