302-AW-135 - Moisture and Dust Proof, Vertical Mounting Fixed Temperature 135°F Maximum Spacing - UL 50' x 50'
302-AW-194 - Moisture and Dust Proof, Vertical Mounting Fixed Temperature 194°F Maximum Spacing - UL 50' x 50'
这款是防潮和防尘
302-EPM-135 - Explosion Proof Screw Base, Vertical Mounting Fixed Temperature 135°F Maximum Spacing - UL 40' x 40'
302-EPM-194Explosion Proof Screw Base, Vertical Mounting Fixed Temperature 194°F Maximum Spacing - UL 40' x 40'
