The AirBoxx is a 1-pound hand-held indoor air quality monitor. The base unit measures carbon dioxide, carbon monoxide, temperature, relative humidity and four additional channels for user-specified electrochemical sensor configurations, PID option, or external analog input options. The Windows-based software allows the user control over graphs, reports and data output. Features include a password-protected screen, simple electronic calibration, alphanumeric location marking, delay start, flexible intervals and security lock and cable.

KD Engineering Inc., 161 C St., No. 113, Blaine, WA 98230; (800) 308-7717; fax (781) 237-3668.