| Maximum Temperature | +50°C |
| Best Temperature Measurement Accuracy | ±0.5 °C |
| Temperature Measurement Resolution | 0.1°C |
| Equipment Type | CO2 Probe |
| Power Source | Battery |
| Maximum Humidity Measurement | 95%RH |
| Best Humidity Measurement Accuracy | ±2 (35 → 65 %RH) %RH, ±3 (10 → 35 %RH) %RH, ±3 (65 → 90 %RH) %RH, ±5 %RH |
| Humidity Measurement Resolution | 0.1%RH |
| Measurement Parameters | CO2, Humidity, Temperature |
| Carbon Dioxide Resolution | 0 - 10000ppm |
| Best Carbon Dioxide Accuracy | ±100 + 5 % (5001 → 10000 ppm) ppm, ±50 + 3 % (0 → 5000 ppm) ppm |
| Battery Type | AA |
| For Use With | testo 440, testo 440 dP |
| Battery Life | 21 h |
| Weight | 195g |
| Height | 50mm |
| Maximum Operating Temperature | +50°C |
| Dimensions | 295 x 40 x 50mm |
| Minimum Operating Temperature | 0°C |
| Maximum Carbon Dioxide Level | 10000ppm |
| Width | 40mm |
| Length | 295mm |
| Minimum Carbon Dioxide Level | 0ppm |
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