Máy Đo Formaldehyde (CH₂O Hoặc HCHO), Nồng Độ, Nhiệt Độ Không Khí Và Độ Ẩm Extech FM300

The FM300 is a desktop formaldehyde (CH₂O or HCHO) Monitor which measures formaldehyde concentration, air temperature and humidity and displays them simultaneously on an LCD monitor. The FM300 calculates statistical weighted averages of TWA (8-hour Time Weighted Average) and STEL (15-minute Short Term Exposure Limit) and features a Min/Max value recall function, CH₂O Calibration function in fresh air and Internal memory for manually storing (99 readings). Product comes complete with a universal AC adapter, multiple plugs and a user’s manual.