| Measuring Range | CO2 : 0~ 6,000 ppm Temperature : -20℃ ~ 60℃(-4℉ ~ 140℉) Humidity : 10%RH ~ 95%RH | 
| Resolution | CO2 :1ppm 0.1℃/ 0.1℉/ 0.1%RH | 
| Accuracy | CO2 : ±3% of reading or ±50ppm, which is greater. Temperature : ±0.5℃, ±0.9℉ Humidity : ±3%RH ( at 25℃, 30 ~ 95% RH ). ±5%RH ( at 25℃, 10 ~ 30% RH ) | 
| Manual Data Memory Capacity | 99 sets (Direct reading from LCD display) | 
| Auto Memory Capacity | Approx. 16000 sets | 
| Operating Conditions | 5℃ ~ 50℃ (41℉ ~ 122℉) 10 ~ 90% R.H. | 
| Power Source | Six (6) AAA-size alkaline (large current) batteries. | 
| Battery Life | Approx. 8 hours by using alkaline (large current) batteries (without backlight or Alarm function). For long time datalogging, please use AC adapter. | 
| Size | 158(L) ×72(W) ×35(H)mm | 
| Weight | Approx. 255g (including batteries) | 
| Accessories | Instruction Manual, Battery, AC Adaptor (110V/220V), Software CD Rom, RS232 Cable & Carrying case. |