Thermal Anemometer operated with your smartphoneModel : Testo 405iCode : 03-S10-0027Sensor type : Hot wireMeasuring range : 0 to 30 m/sAccuracy ±1 digit : ±(0.1 m/s + 5 % of m.v.) (0 to 2 m/s) ±(0.3 m/s + 5 % of m.v.) (2 to 15 m/s)Resolution : 0.01 m/s Sensor type : NTCMeasuring range : -20 to +60 °CAccuracy ±1 digit : ±0.5 °CResolution : 0.1 °C General technical data Compatability : requires iOS 8.3 or newer / Android 4.3 or newer requires mobile end device with Bluetooth 4.0Storage temperature : -20 to +60 °COperating temperature : -20 to +50 °CBattery type : 3 micro batteries AAABattery life : 15 hrsDimensions : 200 x 30 x 41 mm Telescope extendable to 400 mmอ่านเพิ่มเติม