... . Main reference parameters1. Gas Detection: Carbon dioxide CO22. Product Type: ES-CO23. Detection range: 0-2000ppm, 0-3000ppm, 0-5000ppm4. Detection ... . Power: 3.0W/highest, 700MW/average7. Accuracy: 22°C(72°F)±30ppm+5%Reading8. Operating temperature: -10~65°C9. Operating humidity ...