△The altitude of the installation site is ≤2000m;
△The ambient temperature is -35℃~+70℃; the average value of 24h does not exceed +35℃;
△Relative humidity: +23℃ should not be higher than 83%; +40℃ should not be higher than 93%.
△The product can withstand the influence of humid air, salt spray, oil mist, and mold;
△The installation category of the measuring switch (characteristic current) connected to the main circuit is: Class III (distribution and control level),
The installation category of the measuring switch (characteristic current) not connected to the main circuit is: Class II (load level);
△Pollution level: Level 3;
△Protection level: IP20;
△The product is installed in a medium without explosion hazard, where there is no gas and conductive dust that can corrode metal and destroy insulation, and avoid using it in places invaded by rain and snow;
△When the user's use conditions are more severe than the above, the manufacturer should be consulted.