Omron COMP A-I-R C21 basic Instruction Manual page 19

Indication of connector polarity
For indoor use only
Fuse
Alternating current
Direct current
Date of manufacture YYYY-MM-DD
Certified by TÜV
EN 60601-1;
IEC 60601-1
Efficiency Level of power supply
Trademark of OMRON compressor nebulizers (COMP A-I-R,
COMP A-I-R basic, COMP A-I-R Elite, COMP A-I-R Pro)
Technology OMRON Healthcare Japan
EN
19