| Technical data | |
|---|---|
| Measuring range | -4° to 158 °F / -20 to +70 °C | 
| Accuracy | 
											±1 °F (32° to 158 °F) / ±0.5 °C (0 to +70 °C) | 
| Resolution | 0.1 °F / 0.1 °C | 
| Reaction time | 45 sec (t90) | 
| Technical data | |
|---|---|
| Measuring range | 0 to 100 %rH | 
| Accuracy | 
											±1.8 %rH + 3 % of mv at +77 °F / ±1.8 %RH + 3 % of mv at +25 °C | 
| Resolution | 0.1 %rH | 
| Technical data | |
|---|---|
| Measuring range | -0 to 0 InH₂O / -120 to 120 Pa | 
| Accuracy | ±2 % of mv + 0.0 InH₂O at +72 °F, 405 InH₂O / ±2 % of mv + 0.5 Pa at +22 °C, 1013 hPa | 
| Resolution | 0.000 InH₂O / 0.001 Pa | 
| Reaction time | 1 sec (t90) | 
| Technical data | |
|---|---|
| Measuring range | 280 to 440 InH₂O / 700 to 1100 hPa | 
| Accuracy | ±1 InH₂O / ±3 hPa | 
| Resolution | 0.0 InH₂O / 0.1 hPa | 
| Reaction time | 1 sec | 
| Technical data | |
|---|---|
| Measuring range | 40 to 4000 m³/h | 
| Accuracy | 
											±3 % of mv + 12 m³/h at +72 °F / ±3 % of mv + 12 m³/h at +22 °C  | 
| Reaction time | 1 sec (t90) | 
| Resolution | 1 m³/h | 
| Technical data | |
|---|---|
| EU-/EG-guidelines | EU-guideline 2014/30/EU | 
| Warranty | 2 years | 
| Battery type | Alkaline, type AA | 
| Battery life | 40 h | 
| Display size | 3.5" | 
| Display function | Dot matrix | 
| Display ligthing | with illumination | 
| Interface | Micro-USB; Bluetooth® 4.0 wireless technology | 
| Memory | 2 GB (internal) | 
| Storage temperature | -4° to 140 °F / -20 to +60 °C | 
| Weight | 102 oz. / 2900 g | 
| Dimensions | 24 x 24 in. (Standard hood) / 610 x 610 mm (Standard hood) | 
| Operating temperature | 23° to 122 °F / -5 to +50 °C |