2. If no lower temperature value is given, the lower temperature value is 0 °C:
        25 T 85  (meaning -25 °C up to +85 °C)
          T 85  (meaning 0 °C up to +85 °C)

3. If no information is given, the rated ambient temperature range is 0 °C up to 55 °C.
如果没有温度标识,则认为开关的使用的环境温度为 0-55 °C

4. For  switches  only  partially  suitable  for  a  rated  ambient  temperature  higher  than  55  °C
(according to 7.1.3.3), the information shall be provided as follows:

T  85/55  (meaning  up  to  85  °C  for  the  switch  body  and  up  to  55  °C  for  the  actuating member).

5. For switches only partially suitable for a rated ambient temperature higher than 55 °C or 35 °C (see 7.1.3.3 and 7.1.3.4), the information shall be provided as follows:

T  85/35  (meaning  up  to  85 °C  for  the  switch  body  and  up  to  35 °C  for  the  actuating member).

【额定循环次数】

Information  about  the  rated  operating  cycles  shall  be  provided  in  a  scientific manner  by using symbol "E", indicating the exponent. For switches for 10 000 operating cycles according to 7.1.4.4, this information is not necessary:
1E3 = 1 000, 25E3 = 25 000, 1E5 = 100 000
开关的循环次数要用科学计数法来表示