| ppm | Symptoms and applicable standard |
| 0-1 | Normal background levels |
| 9 | Maximum indoor air quality level: Maximum allowable concentration per ASHRAE Residential standards 62-1989 for living area. |
| 25 | Maximum limit 8 hrs of continuous exposure per California OSHA workplace standards. |
| 35 | Maximum 8 hrs average exposure level per US OSHA workplace standards |
| 50 | Maximum concentration for continuous exposure in any 8 hrs average level per OSHA standards. |
| 100 | Remove employees from enclosed space if the CO concentration exceeds 100ppm per OSHA exposure limit. |
| 200 | Mild headache, fatigue, nausea and dizziness within 2-3 hrs. |
| 400 | Frontal headache, life threatening after 3 hrs. Maximum concentration in flue gas per the US EPA and AGA standards. |
| 800 | Dizziness, nausea, convulsions, death within 2-3 hrs. |
| 1600 | Nausea w/i 20 min.,death w/i 2-3 hrs |
| Model | 7701 |
| CO Range | 0~999 ppm |
| CO Resolution | 1 ppm |
| CO Accuracy (at 20±5℃, 50±20%RH) |
±20% at 0~100 ppm; ±15% at 100~500 ppm, other range are not specified |
| CO Response Time | within 60 seconds |
| LCD Size | 26(H) * 11(W) mm |
| Meter Size | 175(L) * 47(W) * 28(H)mm |
| Operating Temperature | 0~50℃ |
| Operating RH% | 5~95% RH (avoid condensation) |
| Storage Temperature | -20~50℃ |
| Storage RH% | 0~95% RH (avoid condensation) |
| Power Supply | 3 PCS AAA Batteries |
| Battery Life | 300 hours |
| Weight | ~120g |
| Standard Package | Meter, Manual, Batteries, Plain Box, Wrist Strap, Soft carry pouch |
Malaysia
