supply of anemometer , anemometer as per following specification. air velocity and temperature displa y should be at the same time temperature sensor built-in with anemometer fan low power c onsumption data / max / min. hold facility auto power off. range of wind speed in m/s: 0.0 to 45.0 m/s with an accuracy of +/-3%; range of wind speed in knots: 0.0 to 88.0 knots with an ac curacy of +/-3%; range of wind speed in km/hr: 0.0 to 140.0 km/hr with an accuracy of +/-3%; range of wind speed in ft/min: 0 to 8800ft/min with an accuracy of +/-3%; range of temperatu re in deg c: 0 deg c to 60 deg c with an accuracy of +/-2 deg c; range of temperature in deg : 32 deg f to 140 deg f with an accuracy of +/-4 deg f; to model no. avm-04 of metravi make o r equivalent warranty : 1 year or better. ]