![REED Instruments R9905 Natural Gas, Carbon Monoxide & Refrigerant Detectors; Type: Air Quality Meter; Function: Measures Carbon Dioxide (CO2), Temperature, Humidity & Automatically Calculates Time-Weighted Average & Short-Term Exposure Limit; Accurac REED Instruments R9905 Natural Gas, Carbon Monoxide & Refrigerant Detectors; Type: Air Quality Meter; Function: Measures Carbon Dioxide (CO2), Temperature, Humidity & Automatically Calculates Time-Weighted Average & Short-Term Exposure Limit; Accurac](https://cdn11.bigcommerce.com/s-rerso7mgzy/images/stencil/640x640/products/674126/931715/1830366-21__12877.1719384636.jpg?c=1)
REED Instruments R9905 Natural Gas, Carbon Monoxide & Refrigerant Detectors; Type: Air Quality Meter; Function: Measures Carbon Dioxide (CO2), Temperature, Humidity & Automatically Calculates Time-Weighted Average & Short-Term Exposure Limit; Accurac