MODEL AZ-901 REMOTE PROBE FOR RH / TEMP! RH / TEMP/ DEW POINT/ ALARM CAPACITANCE POLYMER SENSOR ! RS232 INTERFACE ! Temperature range : -10~50癈,+14~122癋 Airflow ranges : 80~6900ft/ min, 0.4~35m/ sec. Resolution (Temperature) : 0.1癈,0.1癋 Resolution(Wind speed-FTM) : 1ft/ min Resolution(Air volume-CFM) : 0.01m/sec Accuracy(Airflow) : ?%FS Accuracy(Temperature) : Memory : Minimum/ Maximum. Operating Temp : 0~50癈. Operating Humidity : Max.90%RH (0~35癈). Auto power off : 20 Min. sleep mode disable. Dimensions : 181x71x38mm.(Hx Wx T) Low battery indicator.