Check the listing for details. AZ89191 Bluetooth Temp./CO2 Anemometer Wind Speed Meter Air Velocity Tester. Condition: New. Listed at 965.60 USD. AZ89191 Bluetooth Temp./RH/CO2 Anemometer Wind Speed Meter AZ 89191 Wind Speed Meter for Android & IOS * Measures air velocity, volume, temperature, humidity, dew point & wet bulb temperature and CO2 * Broadcasting data every second to smart devices by using Bluetooth technology * 10 cm diameter vane type with build in temperature, humidity and NDIR CO2 sensor * Auto airflow cone recognize * Optional square & round flow cone and extension stick * Unlimited points average auto calculation * Time weighted average auto calculation * Free APP provides data recording, photograph & filing * Please search for "Nice Flow" from APP stores Specification of 89191 Bluetooth 4.0 Anemometer with Temperature, Humidity, CO2: Model 89191 Wind Speed Range 0.20~30.00 m/s Wind Speed Accuracy ±(1.5% of reading+0.3 m/s) for under 20 m/s ±(3% of reading+0.3 m/s) for above 20 m/s Air Temperature Range -20~60℃ Air Temperature Resolution 0.1℃, 0.1℉ Air Temperature Accuracy ±0.6℃ Air RH% Range 0.1%~99.9%RH Air RH% Resolution 0.1%RH Air RH% Accuracy ±3%RH (at 25℃ 10~90%RH, others ±5%RH) CO2 Range 0~9999 ppm, (5001~9999 ppm out of scale range) CO2 Accuracy ±30 ppm ±5% of reading (0~5000 ppm) Temperature Response Time 60 seconds (typical) Air RH% Response Time 60 seconds (typical) LCD Update Every second Wet Bulb Temp. Display -20~59.9℃ Dew Point Temp. Display -5~59.9℃ Air Volume Display (CMM) 0~99999 m3/minute Air Volume Resolution 0.1 (0~9999.9) or 1 (10000~99999) LCD Size 54(L) * 32.5(W) mm Operating Temperature 0~50℃ Operating RH% Humidity