As per testing, model 3301HA1S7V5AM0320KBM1E1C1 is invalid on our end. ‘M1’ is not a valid option of Hazardous Locations Certifications.
However, upon checking on R-3301 Model Structure Drawing, ‘E1’ is a valid option of Hazardous Locations Certifications and ‘M1’ is a valid option of Display Type.