Description Lutron AM-4221 is a CUP Anemometer for high reliability of correct measurment. Out side air speed measurement. 0.9 to 35.0 m/s, ft/min., km/h, mile/h, knots. Temperature : 0 to 50 °C, °C/°F. All in one, hand held type. Cup type probe, high reliability. LCD display, Record (max., min.). IP-65 Water resistance, heavy duty. DC 1.5V battery (UM-4, AAA) x 4.
