| Model | 7787 | 
| CO2 Range | 0~9999 ppm (2001~9999 ppm out of scale range) | 
| CO2 Resolution | 1 ppm | 
| CO2 Accuracy | ±50 ppm ±5% of reading (0~2000 ppm), other range are not specified | 
| CO2 Response Time | <2 mins (90% step change) | 
| CO2 Warm-up Time | 30 Seconds | 
| Air Temperature Range | -10~60℃, 14~140! | 
| Air Temperature Resolution | 0.1℃, 0.1! | 
| Air Temperature Accuracy | ±0.6℃, ±0.9! | 
| Air Temperature Response Time | <2 mins (90% step change) | 
| Humidity Range | 0.1~99.9% RH | 
| Humidity Resolution | 0.1% RH | 
| Humidity Accuracy | ±5%RH (at 25℃, 10~90%RH); others ±7%RH | 
| Humidity Response Time | <10 mins (90% step change) | 
| LCD Size | 60(H) * 82(W) mm | 
| Meter Size | 120(Diameter) * 80(Depth) mm | 
| Operating Temperature | 0~50℃ | 
| Operating RH% | 5~80% RH (avoid condensation) | 
| Storage Temperature | -20~50℃ | 
| Storage RH% | 5~90% RH (avoid condensation) | 
| Power Supply | 5V DC Adaptor (±10%), "g500 mA | 
| Weight | ~200g | 
| Standard Package | Meter, Manual, , Plain Box 5V Universal Adaptor | 
 Malaysia
Malaysia